Release Image Tools 0.2.0

2026-09-02 07:56:38 +02:00
parent 83926457b2
commit 79d223c347
36 changed files with 2231 additions and 245 deletions
@@ -0,0 +1,39 @@
 name: Verify
 on:
  push:
    branches: [main]
  pull_request:
  workflow_dispatch:
 concurrency:
  group: verify-${{ gitea.repository }}-${{ gitea.ref }}
  cancel-in-progress: true
 permissions:
  contents: read
 jobs:
  verify:
    runs-on: ubuntu-latest
    timeout-minutes: 45
    env:
      CI: "true"
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: "22"
          cache: npm
      - name: Select declared npm version
        run: npm install --global npm@11.17.0
      - name: Install dependencies
        run: npm ci
      - name: Audit runtime dependencies
        run: npm audit --omit=dev --audit-level=moderate
      - name: Check, test, and build
        run: npm run check
      - name: Install browser engines
        run: npx playwright install --with-deps chromium firefox webkit
      - name: Browser tests
        run: npm run test:browser
@@ -1,5 +1,16 @@
 # Changelog
 ## 0.2.0 - 2026-09-02
 - Adopted the shared bounded worker-job protocol, byte-size formatter, Blob URL
  leases and safe download helpers from `@add-ideas/toolbox-helpers` 0.2.0.
 - Added synchronized 25–400% preview zoom, pointer/keyboard crop editing and
  versioned transform recipe import/export.
 - Added a bounded, cancellable batch ZIP containing collision-free image names,
  per-file reports and a machine-readable batch manifest.
 - Added real per-format PNG/JPEG/WebP decoder and encoder probes and explicit
  unsupported-codec disclosure without silent format substitution.
 ## 0.1.0 - 2026-09-01
 - Added bounded pre-decode JPEG, PNG and WebP header inspection with static-only enforcement.
@@ -7,18 +7,19 @@ Image Tools is a standalone, local-first raster editor for the [add·ideas Toolb
 - Open static JPEG, PNG and WebP images.
 - Inspect signatures, dimensions, animation, alpha, EXIF orientation and common metadata/profile markers before decode.
 - Refuse recognized animated or multi-picture input instead of silently discarding frames.
- Crop with numeric controls and centered aspect presets.
+- Crop with numeric controls, centered aspect presets and a pointer/keyboard-adjustable overlay; zoom source and result together from 25–400% without changing export pixels.
 - Rotate in quarter turns and flip horizontally or vertically.
 - Resize by fit, center-cropped fill or exact dimensions.
 - Preview source and result side by side while keeping the last completed preview visible during updates.
 - Export PNG, JPEG or WebP with an explicit quality/background policy.
- Apply one recipe to a bounded queue and download each completed result and its JSON operation report.
+- Save/load a strictly validated, versioned JSON recipe containing transform, output and metadata/colour policy.
 - Apply one recipe to a bounded queue; download results individually or build one collision-free ZIP containing images, per-image JSON reports and a batch manifest. ZIP assembly has its own 128 MiB input / 160 MiB output budget and is cancellable while reading or compressing.
-Inputs are bounded before browser decoding: 20 files, 256 MiB per source, 512 MiB per queue, 32,768 pixels per edge, 40 megapixels, and a 512 MiB estimated working-memory budget. Image processing runs in a disposable module worker when OffscreenCanvas is available, with a main-thread capability fallback and a 120-second hard deadline.
+Inputs are bounded before browser decoding: 20 files, 256 MiB per source, 512 MiB per queue, 32,768 pixels per edge, 40 megapixels, and a 512 MiB estimated working-memory budget. Image processing runs through the shared cancellable disposable-worker protocol when OffscreenCanvas is available, with typed progress, a main-thread capability fallback and a 120-second hard deadline.
 ## Honest format and colour policy
-Version 0.1 is intentionally static-only. GIF, AVIF, HEIC, JPEG XL, TIFF, animated PNG/WebP and recognized multi-picture JPEG are not flattened or partially exported.
+Version 0.1 is intentionally static-only. GIF, AVIF, HEIC, JPEG XL, TIFF, BMP, animated PNG/WebP and recognized multi-picture JPEG are not flattened or partially exported. The UI probes the exact native encoder MIME response and disables formats that the current browser cannot produce; header support is never presented as proof that decoding will succeed.
 Exports are browser-native pixel re-encodes. Source EXIF, XMP, ICC, comments, thumbnails and trailing data are not intentionally copied, but Image Tools is not a privacy verifier. Browser canvas uses an 8-bit working representation and does not preserve arbitrary ICC profiles, HDR precision, original compression, or byte identity. JPEG is lossy; PNG is lossless only relative to the canvas pixels. Browser encoder output can vary.
@@ -38,7 +39,7 @@ The tests include generated JPEG/PNG/WebP header fixtures, malformed/over-limit
 ## Release
-`npm run release:artifact` creates `release/image-tools-0.1.0.zip` and its checksum sidecar after all checks pass.
+`npm run release:artifact` creates `release/image-tools-0.2.0.zip` and its checksum sidecar after all checks pass.
 ## Licence
@@ -1,7 +1,7 @@
 # Corresponding source
-The corresponding source for Image Tools 0.1.0 is available at:
+The corresponding source for Image Tools 0.2.0 is available at:
-https://git.add-ideas.de/lotobo/image-tools/src/tag/v0.1.0
+https://git.add-ideas.de/lotobo/image-tools/src/tag/v0.2.0
 Build with Node.js 22, npm 11, `npm ci`, and `npm run release:artifact`.
@@ -6,9 +6,16 @@ Image Tools is a relocatable Vite/React application using the shared Toolbox she
 Every selected `File` is untrusted. `src/image/headers.ts` reads a metadata window of at most the first 1 MiB with `Blob.slice()` and performs checked-offset parsing for JPEG markers, PNG chunks and WebP RIFF chunks. PNG and WebP receive an additional structural pass that reads only eight-byte chunk headers, skips payloads by checked offset, stops at image data, and refuses more than 4,096 pre-image chunks. This prevents APNG or animated-WebP control chunks hidden behind a large ancillary payload from bypassing static-only enforcement. Inspection establishes dimensions, recognized animation/multi-picture state, EXIF orientation and a bounded metadata inventory. The image is not given to a browser decoder until source, dimension, pixel and estimated-memory policies pass.
-Each preview or export gets its own generation-bound module worker. The caller terminates the worker on replacement, cancellation, unmount or the 120-second deadline, so a stale result cannot replace current state. Files are structured-cloned to the worker; results return as `Blob` objects. Browsers without worker `OffscreenCanvas` use the same pure pipeline on the main thread and report missing capabilities instead of substituting a remote service.
+Each preview or export gets its own generation-bound module worker through the
 `@add-ideas/toolbox-helpers` worker-job protocol. The caller filters typed
 progress by job ID and terminates the worker on replacement, cancellation,
 unmount or the 120-second deadline, so a stale result cannot replace current
 state. Files are structured-cloned to the worker; results return as `Blob`
 objects. Browsers without worker `OffscreenCanvas` use the same pure pipeline
 on the main thread and report missing capabilities instead of substituting a
 remote service.
-Object URLs are scoped to React lifecycles and revoked on replacement/unmount. Source files are never mutated. Downloads happen only after an explicit user action.
+Object URLs are scoped to React lifecycles and revoked on replacement/unmount. Source files are never mutated. Downloads happen only after an explicit user action. The crop overlay edits the same normalized rectangle consumed by the pipeline; zoom is view-only CSS state and never enters the recipe.
 ## Operation order
@@ -24,14 +31,21 @@ The canvas pipeline has one documented order:
 The returned MIME type must exactly equal the requested type. A browser that substitutes PNG for an unsupported encoder produces an error and no misleading filename.
-Intermediate canvases are released as soon as their next stage is drawn. The conservative preflight estimate allows twelve live bytes per source pixel, covers three RGBA-sized surfaces, and rejects sources above 40 megapixels or 512 MiB estimated working memory. Preview output is capped to a 1,600-pixel edge, while reports retain intended export dimensions. Batch execution is sequential and keeps at most 256 MiB of completed output blobs.
+Intermediate canvases are released as soon as their next stage is drawn. The conservative preflight estimate allows twelve live bytes per source pixel, covers three RGBA-sized surfaces, and rejects sources above 40 megapixels or 512 MiB estimated working memory. Preview output is capped to a 1,600-pixel edge, while reports retain intended export dimensions. Batch execution is sequential and keeps at most 256 MiB of completed output blobs. A separate fflate ZIP step reads at most 128 MiB of those blobs, uses fixed entry dates/collision-free names, includes operation reports and a manifest, and refuses output beyond 160 MiB.
 Recipe JSON has an explicit `de.add-ideas.image-tools.recipe.v1` identity. Import validates every normalized crop, rotation, resize and output field before replacing state; unknown output formats cannot enter the processing pipeline through a recipe.
 ## Domain boundaries
-Format inspection, checked limits, geometry, filenames, reports, downloads and processor RPC are separate modules under `src/image/`. These are deliberately shaped for later replacement with `@add-ideas/toolbox-helpers` primitives. The Helpers 0.1 package was not yet published while this slice was implemented, so Image Tools does not carry an unresolved dependency.
+Format inspection, checked image limits, geometry, filenames and reports remain
 domain modules under `src/image/`. Generic byte-size display, filename safety,
 Blob URL leases, single downloads and disposable-worker lifecycle come
 from `@add-ideas/toolbox-helpers` 0.2.0.
-No third-party codec or helper runtime dependency is added in v0.1. Native
+No third-party image codec is added. The exactly pinned MIT-licensed `fflate`
-codecs avoid a large WASM/source-identity release burden, at the cost of
+dependency writes the optional batch container only; it never decodes image
-explicitly documented browser-dependent encoding and colour-management
+pixels. Native codecs avoid a large
-behaviour. A future controlled codec adapter can implement the same processing
+WASM/source-identity release burden, at the cost of explicitly documented
-request/result contract without changing the UI model.
+browser-dependent encoding and colour-management behaviour. A future
 controlled codec adapter can implement the same processing request/result
 contract without changing the UI model.
@@ -16,6 +16,8 @@ Selected images stay in the browser. Image Tools has no analytics, telemetry, ac
 - Recognized APNG, animated WebP and JPEG MPF/multi-picture files are refused before decode.
 - Each material operation has an abort signal, disposable worker and 120-second deadline.
 - A batch is sequential and retains at most 256 MiB of completed output.
 - Batch ZIP assembly separately caps retained inputs at 128 MiB and output at 160 MiB, uses collision-free generated paths, and includes only already-created outputs/reports after an explicit action.
 - Imported recipe JSON is capped and structurally validated; it cannot name files, fetch resources or introduce an unadvertised codec.
 - Imported strings are rendered as React text, never active markup.
 - Unsafe path characters and leading/trailing dots are removed from generated download names.
@@ -1,21 +1,23 @@
 {
  "name": "image-tools",
-  "version": "0.1.0",
+  "version": "0.2.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "image-tools",
-      "version": "0.1.0",
+      "version": "0.2.0",
      "license": "GPL-3.0-or-later",
      "dependencies": {
-        "@add-ideas/toolbox-contract": "0.2.3",
+        "@add-ideas/toolbox-contract": "0.3.0",
-        "@add-ideas/toolbox-shell-react": "0.2.3",
+        "@add-ideas/toolbox-helpers": "0.2.0",
        "@add-ideas/toolbox-shell-react": "0.3.0",
        "fflate": "0.8.3",
        "react": "19.2.8",
        "react-dom": "19.2.8"
      },
      "devDependencies": {
-        "@add-ideas/toolbox-testkit": "0.2.3",
+        "@add-ideas/toolbox-testkit": "0.3.0",
        "@eslint/js": "10.0.1",
        "@playwright/test": "1.62.1",
        "@testing-library/jest-dom": "6.9.1",
@@ -41,18 +43,25 @@
      }
    },
    "node_modules/@add-ideas/toolbox-contract": {
-      "version": "0.2.3",
+      "version": "0.3.0",
-      "resolved": "https://git.add-ideas.de/api/packages/lotobo/npm/%40add-ideas%2Ftoolbox-contract/-/0.2.3/toolbox-contract-0.2.3.tgz",
+      "resolved": "https://git.add-ideas.de/api/packages/lotobo/npm/%40add-ideas%2Ftoolbox-contract/-/0.3.0/toolbox-contract-0.3.0.tgz",
-      "integrity": "sha512-T0PVSuMT40GjTDfQJhEEY3ZawQq8zz1/ry95JdKI6W39CdLacaRXdGnEpDCMHt+jUbf1Jz7Nat/M5dFCgKVM9A==",
+      "integrity": "sha512-dKrK7BjOFwqJaBfJuhKxZKIld4sH0AKjEn6a0yLnbdMUFY+fFv4VSLGV2tNSBD016gumc2iNqOjUj/ld7x4rtA==",
      "license": "Apache-2.0"
    },
    "node_modules/@add-ideas/toolbox-helpers": {
      "version": "0.2.0",
      "license": "GPL-3.0-or-later",
      "engines": {
        "node": ">=22"
      }
    },
    "node_modules/@add-ideas/toolbox-shell-react": {
-      "version": "0.2.3",
+      "version": "0.3.0",
-      "resolved": "https://git.add-ideas.de/api/packages/lotobo/npm/%40add-ideas%2Ftoolbox-shell-react/-/0.2.3/toolbox-shell-react-0.2.3.tgz",
+      "resolved": "https://git.add-ideas.de/api/packages/lotobo/npm/%40add-ideas%2Ftoolbox-shell-react/-/0.3.0/toolbox-shell-react-0.3.0.tgz",
-      "integrity": "sha512-DT5lQDH48BFkFcmFLZnQh7+Cm73JzBPcmp5WzUXypfkUXpEyDYHzaXgmW4kZ0edSwh4RK4sPmx+JPtK0X4aKCQ==",
+      "integrity": "sha512-74p6JzAOG0YCAKdlc1hLofV4ZIko7vb448S75cIiM88PKm93EHl5VD7g8YVyfM56Ui97UY9dmy+Whiq4sGzpsg==",
      "license": "Apache-2.0",
      "dependencies": {
-        "@add-ideas/toolbox-contract": "0.2.3"
+        "@add-ideas/toolbox-contract": "0.3.0"
      },
      "peerDependencies": {
        "react": ">=18 <20",
@@ -60,13 +69,13 @@
      }
    },
    "node_modules/@add-ideas/toolbox-testkit": {
-      "version": "0.2.3",
+      "version": "0.3.0",
-      "resolved": "https://git.add-ideas.de/api/packages/lotobo/npm/%40add-ideas%2Ftoolbox-testkit/-/0.2.3/toolbox-testkit-0.2.3.tgz",
+      "resolved": "https://git.add-ideas.de/api/packages/lotobo/npm/%40add-ideas%2Ftoolbox-testkit/-/0.3.0/toolbox-testkit-0.3.0.tgz",
-      "integrity": "sha512-sq1MwhKWfFKen+N+124hl74qQimRSvmQ9sOU7jdcI+2qCKZ67+2B8rWyezeV80uTFu4Jv6deHksfYQ/tKNV6XQ==",
+      "integrity": "sha512-4Fk+oSvZFspOMIXr8Xy040nhAaBsIQAzsGyXWSpjn3+k3yBKq7nB1r5zCHhsXzfdLzvPDAx2KcmSNOhM330D9w==",
      "dev": true,
      "license": "Apache-2.0",
      "dependencies": {
-        "@add-ideas/toolbox-contract": "0.2.3"
+        "@add-ideas/toolbox-contract": "0.3.0"
      },
      "bin": {
        "toolbox-check": "dist/cli.js"
@@ -2271,6 +2280,12 @@
        }
      }
    },
    "node_modules/fflate": {
      "version": "0.8.3",
      "resolved": "https://registry.npmjs.org/fflate/-/fflate-0.8.3.tgz",
      "integrity": "sha512-tbZNuJrLwGUp3zshBtdy4W+ORxZuIh8a5ilyIEQDC5rY1f3U20JMry0Ll3WBzU58EZKsEuJFXhb5gwv8CsPvgA==",
      "license": "MIT"
    },
    "node_modules/file-entry-cache": {
      "version": "8.0.0",
      "resolved": "https://registry.npmjs.org/file-entry-cache/-/file-entry-cache-8.0.0.tgz",
@@ -1,7 +1,7 @@
 {
  "name": "image-tools",
-  "version": "0.1.0",
+  "version": "0.2.0",
-  "description": "Edit and batch-process raster images locally in the browser.",
+  "description": "Crop, resize, convert and batch-process static raster images locally.",
  "license": "GPL-3.0-or-later",
  "author": "Albrecht Degering",
  "repository": {
@@ -39,13 +39,15 @@
    "release:artifact": "npm run check && npm run test:browser && npm run package:release -- --force"
  },
  "dependencies": {
-    "@add-ideas/toolbox-contract": "0.2.3",
+    "@add-ideas/toolbox-contract": "0.3.0",
-    "@add-ideas/toolbox-shell-react": "0.2.3",
+    "@add-ideas/toolbox-helpers": "0.2.0",
    "@add-ideas/toolbox-shell-react": "0.3.0",
    "fflate": "0.8.3",
    "react": "19.2.8",
    "react-dom": "19.2.8"
  },
  "devDependencies": {
-    "@add-ideas/toolbox-testkit": "0.2.3",
+    "@add-ideas/toolbox-testkit": "0.3.0",
    "@eslint/js": "10.0.1",
    "@playwright/test": "1.62.1",
    "@testing-library/jest-dom": "6.9.1",
@@ -15,7 +15,25 @@ export default defineConfig({
    timeout: 180_000,
  },
  projects: [
-    { name: "chromium", use: { ...devices["Desktop Chrome"] } },
+    {
-    { name: "firefox", use: { ...devices["Desktop Firefox"] } },
+      name: "chromium",
      testIgnore: /responsive\.spec\.ts/,
      use: { ...devices["Desktop Chrome"] },
    },
    {
      name: "firefox",
      testIgnore: /responsive\.spec\.ts/,
      use: { ...devices["Desktop Firefox"] },
    },
    {
      name: "webkit",
      testIgnore: /responsive\.spec\.ts/,
      use: { ...devices["Desktop Safari"] },
    },
    {
      name: "mobile-chromium",
      testMatch: /responsive\.spec\.ts/,
      use: { ...devices["Pixel 5"] },
    },
  ],
 });
@@ -1,5 +1,16 @@
 # Changelog
 ## 0.2.0 - 2026-09-02
 - Adopted the shared bounded worker-job protocol, byte-size formatter, Blob URL
  leases and safe download helpers from `@add-ideas/toolbox-helpers` 0.2.0.
 - Added synchronized 25–400% preview zoom, pointer/keyboard crop editing and
  versioned transform recipe import/export.
 - Added a bounded, cancellable batch ZIP containing collision-free image names,
  per-file reports and a machine-readable batch manifest.
 - Added real per-format PNG/JPEG/WebP decoder and encoder probes and explicit
  unsupported-codec disclosure without silent format substitution.
 ## 0.1.0 - 2026-09-01
 - Added bounded pre-decode JPEG, PNG and WebP header inspection with static-only enforcement.
@@ -1,5 +1,5 @@
 ==============================================================================
-@add-ideas/toolbox-contract@0.2.3
+@add-ideas/toolbox-contract@0.3.0
 Declared licence: Apache-2.0
 ==============================================================================
 --- LICENSE ---
@@ -198,7 +198,688 @@ Declared licence: Apache-2.0
 ==============================================================================
-@add-ideas/toolbox-shell-react@0.2.3
+@add-ideas/toolbox-helpers@0.2.0
 Declared licence: GPL-3.0-or-later
 ==============================================================================
 --- LICENSE ---
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 ==============================================================================
@add-ideas/toolbox-shell-react@0.3.0
 Declared licence: Apache-2.0
 ==============================================================================
 --- LICENSE ---
@@ -396,6 +1077,33 @@ Declared licence: Apache-2.0
      limitations under the License.
 ==============================================================================
 fflate@0.8.3
 Declared licence: MIT
 ==============================================================================
 --- LICENSE ---
 MIT License
 Copyright (c) 2026 Arjun Barrett
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 ==============================================================================
 react@19.2.8
 Declared licence: MIT
@@ -7,18 +7,19 @@ Image Tools is a standalone, local-first raster editor for the [add·ideas Toolb
 - Open static JPEG, PNG and WebP images.
 - Inspect signatures, dimensions, animation, alpha, EXIF orientation and common metadata/profile markers before decode.
 - Refuse recognized animated or multi-picture input instead of silently discarding frames.
- Crop with numeric controls and centered aspect presets.
+- Crop with numeric controls, centered aspect presets and a pointer/keyboard-adjustable overlay; zoom source and result together from 25–400% without changing export pixels.
 - Rotate in quarter turns and flip horizontally or vertically.
 - Resize by fit, center-cropped fill or exact dimensions.
 - Preview source and result side by side while keeping the last completed preview visible during updates.
 - Export PNG, JPEG or WebP with an explicit quality/background policy.
- Apply one recipe to a bounded queue and download each completed result and its JSON operation report.
+- Save/load a strictly validated, versioned JSON recipe containing transform, output and metadata/colour policy.
 - Apply one recipe to a bounded queue; download results individually or build one collision-free ZIP containing images, per-image JSON reports and a batch manifest. ZIP assembly has its own 128 MiB input / 160 MiB output budget and is cancellable while reading or compressing.
-Inputs are bounded before browser decoding: 20 files, 256 MiB per source, 512 MiB per queue, 32,768 pixels per edge, 40 megapixels, and a 512 MiB estimated working-memory budget. Image processing runs in a disposable module worker when OffscreenCanvas is available, with a main-thread capability fallback and a 120-second hard deadline.
+Inputs are bounded before browser decoding: 20 files, 256 MiB per source, 512 MiB per queue, 32,768 pixels per edge, 40 megapixels, and a 512 MiB estimated working-memory budget. Image processing runs through the shared cancellable disposable-worker protocol when OffscreenCanvas is available, with typed progress, a main-thread capability fallback and a 120-second hard deadline.
 ## Honest format and colour policy
-Version 0.1 is intentionally static-only. GIF, AVIF, HEIC, JPEG XL, TIFF, animated PNG/WebP and recognized multi-picture JPEG are not flattened or partially exported.
+Version 0.1 is intentionally static-only. GIF, AVIF, HEIC, JPEG XL, TIFF, BMP, animated PNG/WebP and recognized multi-picture JPEG are not flattened or partially exported. The UI probes the exact native encoder MIME response and disables formats that the current browser cannot produce; header support is never presented as proof that decoding will succeed.
 Exports are browser-native pixel re-encodes. Source EXIF, XMP, ICC, comments, thumbnails and trailing data are not intentionally copied, but Image Tools is not a privacy verifier. Browser canvas uses an 8-bit working representation and does not preserve arbitrary ICC profiles, HDR precision, original compression, or byte identity. JPEG is lossy; PNG is lossless only relative to the canvas pixels. Browser encoder output can vary.
@@ -38,7 +39,7 @@ The tests include generated JPEG/PNG/WebP header fixtures, malformed/over-limit
 ## Release
-`npm run release:artifact` creates `release/image-tools-0.1.0.zip` and its checksum sidecar after all checks pass.
+`npm run release:artifact` creates `release/image-tools-0.2.0.zip` and its checksum sidecar after all checks pass.
 ## Licence
@@ -1,7 +1,7 @@
 # Corresponding source
-The corresponding source for Image Tools 0.1.0 is available at:
+The corresponding source for Image Tools 0.2.0 is available at:
-https://git.add-ideas.de/lotobo/image-tools/src/tag/v0.1.0
+https://git.add-ideas.de/lotobo/image-tools/src/tag/v0.2.0
 Build with Node.js 22, npm 11, `npm ci`, and `npm run release:artifact`.
@@ -6,9 +6,16 @@ Image Tools is a relocatable Vite/React application using the shared Toolbox she
 Every selected `File` is untrusted. `src/image/headers.ts` reads a metadata window of at most the first 1 MiB with `Blob.slice()` and performs checked-offset parsing for JPEG markers, PNG chunks and WebP RIFF chunks. PNG and WebP receive an additional structural pass that reads only eight-byte chunk headers, skips payloads by checked offset, stops at image data, and refuses more than 4,096 pre-image chunks. This prevents APNG or animated-WebP control chunks hidden behind a large ancillary payload from bypassing static-only enforcement. Inspection establishes dimensions, recognized animation/multi-picture state, EXIF orientation and a bounded metadata inventory. The image is not given to a browser decoder until source, dimension, pixel and estimated-memory policies pass.
-Each preview or export gets its own generation-bound module worker. The caller terminates the worker on replacement, cancellation, unmount or the 120-second deadline, so a stale result cannot replace current state. Files are structured-cloned to the worker; results return as `Blob` objects. Browsers without worker `OffscreenCanvas` use the same pure pipeline on the main thread and report missing capabilities instead of substituting a remote service.
+Each preview or export gets its own generation-bound module worker through the
 `@add-ideas/toolbox-helpers` worker-job protocol. The caller filters typed
 progress by job ID and terminates the worker on replacement, cancellation,
 unmount or the 120-second deadline, so a stale result cannot replace current
 state. Files are structured-cloned to the worker; results return as `Blob`
 objects. Browsers without worker `OffscreenCanvas` use the same pure pipeline
 on the main thread and report missing capabilities instead of substituting a
 remote service.
-Object URLs are scoped to React lifecycles and revoked on replacement/unmount. Source files are never mutated. Downloads happen only after an explicit user action.
+Object URLs are scoped to React lifecycles and revoked on replacement/unmount. Source files are never mutated. Downloads happen only after an explicit user action. The crop overlay edits the same normalized rectangle consumed by the pipeline; zoom is view-only CSS state and never enters the recipe.
 ## Operation order
@@ -24,14 +31,21 @@ The canvas pipeline has one documented order:
 The returned MIME type must exactly equal the requested type. A browser that substitutes PNG for an unsupported encoder produces an error and no misleading filename.
-Intermediate canvases are released as soon as their next stage is drawn. The conservative preflight estimate allows twelve live bytes per source pixel, covers three RGBA-sized surfaces, and rejects sources above 40 megapixels or 512 MiB estimated working memory. Preview output is capped to a 1,600-pixel edge, while reports retain intended export dimensions. Batch execution is sequential and keeps at most 256 MiB of completed output blobs.
+Intermediate canvases are released as soon as their next stage is drawn. The conservative preflight estimate allows twelve live bytes per source pixel, covers three RGBA-sized surfaces, and rejects sources above 40 megapixels or 512 MiB estimated working memory. Preview output is capped to a 1,600-pixel edge, while reports retain intended export dimensions. Batch execution is sequential and keeps at most 256 MiB of completed output blobs. A separate fflate ZIP step reads at most 128 MiB of those blobs, uses fixed entry dates/collision-free names, includes operation reports and a manifest, and refuses output beyond 160 MiB.
 Recipe JSON has an explicit `de.add-ideas.image-tools.recipe.v1` identity. Import validates every normalized crop, rotation, resize and output field before replacing state; unknown output formats cannot enter the processing pipeline through a recipe.
 ## Domain boundaries
-Format inspection, checked limits, geometry, filenames, reports, downloads and processor RPC are separate modules under `src/image/`. These are deliberately shaped for later replacement with `@add-ideas/toolbox-helpers` primitives. The Helpers 0.1 package was not yet published while this slice was implemented, so Image Tools does not carry an unresolved dependency.
+Format inspection, checked image limits, geometry, filenames and reports remain
 domain modules under `src/image/`. Generic byte-size display, filename safety,
 Blob URL leases, single downloads and disposable-worker lifecycle come
 from `@add-ideas/toolbox-helpers` 0.2.0.
-No third-party codec or helper runtime dependency is added in v0.1. Native
+No third-party image codec is added. The exactly pinned MIT-licensed `fflate`
-codecs avoid a large WASM/source-identity release burden, at the cost of
+dependency writes the optional batch container only; it never decodes image
-explicitly documented browser-dependent encoding and colour-management
+pixels. Native codecs avoid a large
-behaviour. A future controlled codec adapter can implement the same processing
+WASM/source-identity release burden, at the cost of explicitly documented
-request/result contract without changing the UI model.
+browser-dependent encoding and colour-management behaviour. A future
 controlled codec adapter can implement the same processing request/result
 contract without changing the UI model.
@@ -16,6 +16,8 @@ Selected images stay in the browser. Image Tools has no analytics, telemetry, ac
 - Recognized APNG, animated WebP and JPEG MPF/multi-picture files are refused before decode.
 - Each material operation has an abort signal, disposable worker and 120-second deadline.
 - A batch is sequential and retains at most 256 MiB of completed output.
 - Batch ZIP assembly separately caps retained inputs at 128 MiB and output at 160 MiB, uses collision-free generated paths, and includes only already-created outputs/reports after an explicit action.
 - Imported recipe JSON is capped and structurally validated; it cannot name files, fetch resources or introduce an unadvertised codec.
 - Imported strings are rendered as React text, never active markup.
 - Unsafe path characters and leading/trailing dots are removed from generated download names.
@@ -1,5 +1,5 @@
 const CACHE_PREFIX = "image-tools-shell-";
-const CACHE_NAME = CACHE_PREFIX + "0.1.0";
+const CACHE_NAME = CACHE_PREFIX + "0.2.0";
 const CORE = ["./", "./manifest.webmanifest", "./favicon.svg"];
 self.addEventListener("install", (event) => {
  event.waitUntil(
@@ -3,12 +3,21 @@
  "schemaVersion": 1,
  "id": "de.add-ideas.image-tools",
  "name": "Image Tools",
-  "version": "0.1.0",
+  "version": "0.2.0",
-  "description": "Edit and batch-process raster images locally in the browser.",
+  "description": "Crop, resize, convert and batch-process static raster images locally.",
  "entry": "./",
  "icon": "./favicon.svg",
  "categories": ["graphics", "image", "productivity"],
-  "tags": ["image", "resize", "crop", "convert", "compress"],
+  "tags": [
    "image",
    "resize",
    "crop",
    "convert",
    "compress",
    "recipe",
    "batch",
    "zip"
  ],
  "integration": {
    "contextVersion": 1,
    "launchModes": ["navigate", "new-tab"],
@@ -21,9 +30,56 @@
    "crossOriginIsolated": false,
    "topLevelContext": false
  },
  "io": {
    "accepts": [
      {
        "mediaType": "image/png",
        "extensions": [".png"],
        "label": "Static PNG"
      },
      {
        "mediaType": "image/jpeg",
        "extensions": [".jpg", ".jpeg"],
        "label": "JPEG"
      },
      {
        "mediaType": "image/webp",
        "extensions": [".webp"],
        "label": "Static WebP when browser-supported"
      },
      {
        "mediaType": "application/json",
        "extensions": [".json"],
        "label": "Image transform recipe"
      }
    ],
    "produces": [
      { "mediaType": "image/png", "extensions": [".png"], "label": "PNG" },
      { "mediaType": "image/jpeg", "extensions": [".jpg"], "label": "JPEG" },
      {
        "mediaType": "image/webp",
        "extensions": [".webp"],
        "label": "WebP when browser-supported"
      },
      {
        "mediaType": "application/zip",
        "extensions": [".zip"],
        "label": "Bounded batch ZIP"
      },
      {
        "mediaType": "application/json",
        "extensions": [".json"],
        "label": "Recipe and processing reports"
      }
    ]
  },
  "capabilities": {
    "required": ["canvas-2d", "workers"],
    "optional": ["create-image-bitmap", "offscreen-canvas"]
  },
  "privacy": {
    "processing": "local",
-    "fileUploads": false,
+    "fileUploads": true,
    "telemetry": false,
    "label": "Inputs stay in this browser; nothing is uploaded."
  },
@@ -8,6 +8,7 @@ interface FileQueueProps {
  readonly onSelect: (id: string) => void;
  readonly onRemove: (id: string) => void;
  readonly onDownload: (item: ImageQueueItem) => void;
  readonly onDownloadAll: () => void;
  readonly onReport: (item: ImageQueueItem) => void;
 }
@@ -18,8 +19,10 @@ export function FileQueue({
  onSelect,
  onRemove,
  onDownload,
  onDownloadAll,
  onReport,
 }: FileQueueProps) {
  const completed = items.filter((item) => item.result).length;
  return (
    <aside className="queue-panel" aria-labelledby="queue-heading">
      <div className="section-heading section-heading--compact">
@@ -27,10 +30,22 @@ export function FileQueue({
          <p className="eyebrow">Bounded queue</p>
          <h2 id="queue-heading">Images</h2>
        </div>
        <div className="queue-heading-actions">
          {completed > 1 ? (
            <button
              type="button"
              className="quiet-button"
              onClick={onDownloadAll}
              disabled={disabled}
            >
              Batch ZIP ({completed})
            </button>
          ) : null}
          <span className="count-chip">
            {items.length}/{IMAGE_LIMITS.maxFiles}
          </span>
        </div>
      </div>
      {items.length === 0 ? (
        <p className="queue-empty">Your inspected files will appear here.</p>
      ) : (
@@ -34,8 +34,9 @@ export function HelpDialog({
      </div>
      <p>
        Choose static JPEG, PNG or WebP files, tune one non-destructive recipe,
-        then export the current image or process the queue sequentially. The
+        then export the current image or process the queue sequentially into a
-        original files are never changed.
+        bounded ZIP with per-file reports. Recipes can be saved and loaded as
        versioned JSON. The original files are never changed.
      </p>
      <h3>Operation order</h3>
      <ol>
@@ -60,6 +61,12 @@ export function HelpDialog({
        8-bit working image; profiles, HDR precision and exact codec bytes are
        not preserved. JPEG output is lossy.
      </p>
      <h3>Codec boundary</h3>
      <p>
        Decode and encode support for PNG, JPEG and WebP is probed against the
        browser's native pipeline. GIF, AVIF, HEIC/HEIF, JPEG XL, TIFF and BMP
        are not claimed or silently substituted in this release.
      </p>
    </dialog>
  );
 }
@@ -1,3 +1,6 @@
 import { useRef, useState, type KeyboardEvent, type PointerEvent } from "react";
 import type { CropRect } from "../image/types";
 interface ImagePreviewProps {
  readonly sourceName?: string;
  readonly beforeUrl?: string;
@@ -12,6 +15,8 @@ interface ImagePreviewProps {
    readonly width: number;
    readonly height: number;
  };
  readonly crop?: CropRect;
  readonly onCropChange?: (crop: CropRect) => void;
 }
 export function ImagePreview({
@@ -22,7 +27,19 @@ export function ImagePreview({
  error,
  intendedDimensions,
  renderedDimensions,
  crop,
  onCropChange,
 }: ImagePreviewProps) {
  const [zoomState, setZoomState] = useState({ sourceName, value: 1 });
  const zoom = zoomState.sourceName === sourceName ? zoomState.value : 1;
  const updateZoom = (next: number | ((value: number) => number)) =>
    setZoomState((current) => {
      const value = current.sourceName === sourceName ? current.value : 1;
      return {
        sourceName,
        value: typeof next === "function" ? next(value) : next,
      };
    });
  if (!sourceName || !beforeUrl) {
    return (
      <section className="preview-empty" aria-label="Image preview">
@@ -44,6 +61,38 @@ export function ImagePreview({
          <p className="eyebrow">Non-destructive preview</p>
          <h2 id="preview-heading">Before and after</h2>
        </div>
        <div className="preview-toolbar">
          <button
            type="button"
            aria-label="Zoom out"
            disabled={zoom <= 0.25}
            onClick={() => updateZoom((value) => clampZoom(value / 1.25))}
          >
            −
          </button>
          <label>
            <span>Zoom {Math.round(zoom * 100)}%</span>
            <input
              aria-label="Zoom"
              type="range"
              min="25"
              max="400"
              step="5"
              value={Math.round(zoom * 100)}
              onChange={(event) => updateZoom(Number(event.target.value) / 100)}
            />
          </label>
          <button type="button" onClick={() => updateZoom(1)}>
            Fit
          </button>
          <button
            type="button"
            aria-label="Zoom in"
            disabled={zoom >= 4}
            onClick={() => updateZoom((value) => clampZoom(value * 1.25))}
          >
            +
          </button>
          {intendedDimensions ? (
            <span className="dimension-chip">
              Export {intendedDimensions.width.toLocaleString()} ×{" "}
@@ -51,6 +100,7 @@ export function ImagePreview({
            </span>
          ) : null}
        </div>
      </div>
      {error ? (
        <p className="notice notice--error" role="alert">
          {error}
@@ -60,11 +110,16 @@ export function ImagePreview({
        <figure>
          <figcaption>Before</figcaption>
          <div className="image-stage image-stage--checkerboard">
            <div className="zoom-canvas" style={{ width: `${zoom * 100}%` }}>
              <img
                src={beforeUrl}
                alt={`${sourceName}, before editing`}
                draggable={false}
              />
              {crop && onCropChange ? (
                <CropOverlay crop={crop} onChange={onCropChange} />
              ) : null}
            </div>
          </div>
        </figure>
        <figure>
@@ -74,11 +129,13 @@ export function ImagePreview({
          </figcaption>
          <div className="image-stage image-stage--checkerboard">
            {afterUrl ? (
              <div className="zoom-canvas" style={{ width: `${zoom * 100}%` }}>
                <img
                  src={afterUrl}
                  alt={`${sourceName}, edited preview`}
                  draggable={false}
                />
              </div>
            ) : (
              <p className="muted">Preparing the first bounded preview…</p>
            )}
@@ -99,3 +156,128 @@ export function ImagePreview({
    </section>
  );
 }
 function CropOverlay({
  crop,
  onChange,
 }: {
  crop: CropRect;
  onChange: (crop: CropRect) => void;
 }) {
  const drag = useRef<
    | {
        mode: "move" | "resize";
        x: number;
        y: number;
        start: CropRect;
      }
    | undefined
  >(undefined);
  function pointerDown(event: PointerEvent<HTMLDivElement>): void {
    const mode =
      (event.target as HTMLElement)
        .closest("[data-crop-mode]")
        ?.getAttribute("data-crop-mode") === "resize"
        ? "resize"
        : "move";
    drag.current = {
      mode,
      x: event.clientX,
      y: event.clientY,
      start: { ...crop },
    };
    event.currentTarget.setPointerCapture(event.pointerId);
    event.preventDefault();
  }
  function pointerMove(event: PointerEvent<HTMLDivElement>): void {
    const current = drag.current;
    const surface = event.currentTarget.parentElement;
    if (!current || !surface) return;
    const bounds = surface.getBoundingClientRect();
    if (bounds.width <= 0 || bounds.height <= 0) return;
    const dx = (event.clientX - current.x) / bounds.width;
    const dy = (event.clientY - current.y) / bounds.height;
    if (current.mode === "move") {
      onChange({
        ...current.start,
        x: clamp(current.start.x + dx, 0, 1 - current.start.width),
        y: clamp(current.start.y + dy, 0, 1 - current.start.height),
      });
    } else {
      onChange({
        ...current.start,
        width: clamp(current.start.width + dx, 0.01, 1 - current.start.x),
        height: clamp(current.start.height + dy, 0.01, 1 - current.start.y),
      });
    }
  }
  function keyDown(event: KeyboardEvent<HTMLDivElement>): void {
    if (
      !["ArrowLeft", "ArrowRight", "ArrowUp", "ArrowDown"].includes(event.key)
    )
      return;
    event.preventDefault();
    const step = event.shiftKey ? 0.025 : 0.005;
    onChange({
      ...crop,
      x: clamp(
        crop.x +
          (event.key === "ArrowLeft"
            ? -step
            : event.key === "ArrowRight"
              ? step
              : 0),
        0,
        1 - crop.width,
      ),
      y: clamp(
        crop.y +
          (event.key === "ArrowUp"
            ? -step
            : event.key === "ArrowDown"
              ? step
              : 0),
        0,
        1 - crop.height,
      ),
    });
  }
  return (
    <div
      className="crop-selection"
      role="application"
      tabIndex={0}
      aria-label="Interactive crop rectangle; drag to move, use the corner to resize, or use arrow keys"
      style={{
        left: `${crop.x * 100}%`,
        top: `${crop.y * 100}%`,
        width: `${crop.width * 100}%`,
        height: `${crop.height * 100}%`,
      }}
      onPointerDown={pointerDown}
      onPointerMove={pointerMove}
      onPointerUp={() => (drag.current = undefined)}
      onPointerCancel={() => (drag.current = undefined)}
      onKeyDown={keyDown}
    >
      <span className="crop-grid" aria-hidden="true" />
      <span
        className="crop-handle"
        data-crop-mode="resize"
        aria-hidden="true"
      />
    </div>
  );
 }
 function clamp(value: number, minimum: number, maximum: number): number {
  return Math.min(maximum, Math.max(minimum, value));
 }
 function clampZoom(value: number): number {
  return clamp(value, 0.25, 4);
 }
@@ -1,3 +1,8 @@
 import { useState, type ChangeEvent } from "react";
 import type { CodecCapabilities } from "../image/codecs";
 import { downloadText } from "../image/downloads";
 import { IMAGE_LIMITS } from "../image/limits";
 import { parseRecipe, serializeRecipe } from "../image/recipes";
 import type {
  CropRect,
  ImageInspection,
@@ -11,6 +16,8 @@ interface TransformControlsProps {
  readonly recipe: TransformRecipe;
  readonly output: OutputSettings;
  readonly disabled: boolean;
  readonly recipeFileDisabled?: boolean;
  readonly codecs?: CodecCapabilities;
  readonly onRecipeChange: (value: TransformRecipe) => void;
  readonly onOutputChange: (value: OutputSettings) => void;
  readonly onReset: () => void;
@@ -21,10 +28,13 @@ export function TransformControls({
  recipe,
  output,
  disabled,
  recipeFileDisabled,
  codecs,
  onRecipeChange,
  onOutputChange,
  onReset,
 }: TransformControlsProps) {
  const [recipeNotice, setRecipeNotice] = useState("");
  const patchRecipe = (patch: Partial<TransformRecipe>) =>
    onRecipeChange({ ...recipe, ...patch });
  const patchCrop = (patch: Partial<CropRect>) =>
@@ -43,6 +53,24 @@ export function TransformControls({
      patchRecipe({ crop: { x: 0, y: (1 - height) / 2, width: 1, height } });
    }
  };
  async function importRecipe(event: ChangeEvent<HTMLInputElement>) {
    const file = event.currentTarget.files?.[0];
    event.currentTarget.value = "";
    if (!file) return;
    try {
      if (file.size > IMAGE_LIMITS.maxRecipeCharacters * 4)
        throw new RangeError("Recipe file is too large.");
      const document = parseRecipe(await file.text());
      onRecipeChange(document.recipe);
      onOutputChange(document.output);
      setRecipeNotice(`Loaded ${file.name}.`);
    } catch (error) {
      setRecipeNotice(
        error instanceof Error ? error.message : "Recipe import failed.",
      );
    }
  }
  return (
    <aside className="controls-panel" aria-labelledby="controls-heading">
      <div className="section-heading section-heading--compact">
@@ -60,6 +88,36 @@ export function TransformControls({
        </button>
      </div>
      <fieldset disabled={recipeFileDisabled}>
        <legend>Reusable recipe</legend>
        <div className="button-row recipe-actions">
          <label className="button">
            Load recipe
            <input
              className="sr-only"
              type="file"
              accept=".json,application/json"
              onChange={(event) => void importRecipe(event)}
            />
          </label>
          <button
            type="button"
            onClick={() =>
              downloadText(
                serializeRecipe(recipe, output),
                "image-tools-recipe.json",
              )
            }
          >
            Save recipe
          </button>
        </div>
        <p className="field-help" role="status" aria-live="polite">
          {recipeNotice ||
            "Versioned JSON retains transform and output policy."}
        </p>
      </fieldset>
      <fieldset disabled={disabled}>
        <legend>Crop</legend>
        <div className="preset-row" aria-label="Crop presets">
@@ -199,9 +257,24 @@ export function TransformControls({
              })
            }
          >
-            <option value="png">PNG</option>
+            <option
-            <option value="jpeg">JPEG</option>
+              value="png"
-            <option value="webp">WebP</option>
+              disabled={codecs ? !codecs.png.encoderAvailable : false}
            >
              PNG
            </option>
            <option
              value="jpeg"
              disabled={codecs ? !codecs.jpeg.encoderAvailable : false}
            >
              JPEG
            </option>
            <option
              value="webp"
              disabled={codecs ? !codecs.webp.encoderAvailable : false}
            >
              WebP
            </option>
          </select>
        </label>
        {output.format !== "png" ? (
@@ -243,6 +316,22 @@ export function TransformControls({
            change managed or HDR colors.
          </span>
        </div>
        <details className="codec-profile">
          <summary>Native codec capabilities</summary>
          {codecs ? (
            <ul>
              {Object.values(codecs).map((codec) => (
                <li key={codec.format}>
                  <strong>{codec.format.toUpperCase()}</strong> decode{" "}
                  {codec.decoderAvailable ? "available" : "unavailable"} ·
                  encode {codec.encoderAvailable ? "available" : "unavailable"}
                </li>
              ))}
            </ul>
          ) : (
            <p>Probing this browser’s exact encoder MIME responses…</p>
          )}
        </details>
      </fieldset>
    </aside>
  );
@@ -14,6 +14,11 @@ import { InspectionSummary } from "./InspectionSummary";
 import { TransformControls } from "./TransformControls";
 import type { ImageQueueItem } from "./workspace-types";
 import type { ProcessingStage } from "../image/canvas-pipeline";
 import { createBatchZip } from "../image/batch-zip";
 import {
  probeCodecCapabilities,
  type CodecCapabilities,
 } from "../image/codecs";
 import { downloadBlob, downloadText } from "../image/downloads";
 import { toImageToolError } from "../image/errors";
 import { createOutputName, createReportName } from "../image/filenames";
@@ -55,6 +60,7 @@ export function Workbench() {
  const [operationMessage, setOperationMessage] = useState<string>();
  const [stage, setStage] = useState<ProcessingStage>();
  const [previewNonce, setPreviewNonce] = useState(0);
  const [codecs, setCodecs] = useState<CodecCapabilities>();
  const inspectionController = useRef<AbortController | undefined>(undefined);
  const previewController = useRef<AbortController | undefined>(undefined);
  const operationController = useRef<AbortController | undefined>(undefined);
@@ -206,6 +212,16 @@ export function Workbench() {
    [],
  );
  useEffect(() => {
    let active = true;
    void probeCodecCapabilities().then((capabilities) => {
      if (active) setCodecs(capabilities);
    });
    return () => {
      active = false;
    };
  }, []);
  const changeRecipe = (next: TransformRecipe) => {
    setRecipe(next);
    discardCompletedOutputs(setItems);
@@ -387,6 +403,51 @@ export function Workbench() {
    if (item.result)
      downloadBlob(item.result.blob, item.result.report.output.name);
  };
  const downloadAllResults = async () => {
    const completed = items.flatMap((item) =>
      item.result
        ? [
            {
              sourceName: item.file.name,
              result: item.result,
            },
          ]
        : [],
    );
    if (completed.length < 1 || operationBusy) return;
    const controller = new AbortController();
    operationController.current = controller;
    const generation = ++operationGeneration.current;
    setOperationBusy(true);
    setOperationMessage("Assembling a bounded batch ZIP locally…");
    try {
      const blob = await createBatchZip(completed, {
        signal: controller.signal,
        onProgress: (done, total) =>
          setOperationMessage(`Reading batch result ${done} of ${total}…`),
      });
      if (
        controller.signal.aborted ||
        operationGeneration.current !== generation
      )
        return;
      downloadBlob(blob, "image-tools-batch.zip");
      setOperationMessage(
        `Downloaded one ZIP containing ${completed.length} images, reports and a batch manifest (${formatBytes(blob.size)}).`,
      );
    } catch (error) {
      if (
        !controller.signal.aborted &&
        operationGeneration.current === generation
      )
        setOperationMessage(toImageToolError(error).message);
    } finally {
      if (operationGeneration.current === generation) {
        setOperationBusy(false);
        setStage(undefined);
      }
    }
  };
  const downloadReport = (item: ImageQueueItem) => {
    if (item.result) {
      downloadText(
@@ -456,6 +517,7 @@ export function Workbench() {
          onSelect={setActiveId}
          onRemove={removeItem}
          onDownload={downloadResult}
          onDownloadAll={downloadAllResults}
          onReport={downloadReport}
        />
        <div className="editor-column">
@@ -484,6 +546,8 @@ export function Workbench() {
                  }
                : undefined
            }
            crop={recipe.crop}
            onCropChange={(crop) => changeRecipe({ ...recipe, crop })}
          />
          {active?.result ? (
            <details className="report-card">
@@ -522,6 +586,8 @@ export function Workbench() {
          recipe={recipe}
          output={output}
          disabled={!active?.inspection || operationBusy}
          recipeFileDisabled={operationBusy}
          codecs={codecs}
          onRecipeChange={changeRecipe}
          onOutputChange={changeOutput}
          onReset={() => changeRecipe(cloneRecipe(DEFAULT_RECIPE))}
@@ -1,3 +1,4 @@
 import { createObjectUrlLease } from "@add-ideas/toolbox-helpers";
 import { useEffect, useState } from "react";
 export function useObjectUrl(value: Blob | undefined): string | undefined {
@@ -9,9 +10,9 @@ export function useObjectUrl(value: Blob | undefined): string | undefined {
      setUrl(undefined);
      return;
    }
-    const next = URL.createObjectURL(value);
+    const lease = createObjectUrlLease(value);
-    setUrl(next);
+    setUrl(lease.url);
-    return () => URL.revokeObjectURL(next);
+    return () => lease.revoke();
  }, [value]);
  return url;
 }
@@ -0,0 +1,171 @@
 import { strToU8, zip, type AsyncZippable } from "fflate";
 import { ImageToolError } from "./errors";
 import { IMAGE_LIMITS } from "./limits";
 import { serializeReport } from "./reports";
 import type { ProcessImageResult } from "./types";
 export interface BatchZipItem {
  readonly sourceName: string;
  readonly result: ProcessImageResult;
 }
 export async function createBatchZip(
  items: readonly BatchZipItem[],
  options: {
    readonly signal?: AbortSignal;
    readonly onProgress?: (completed: number, total: number) => void;
  } = {},
 ): Promise<Blob> {
  if (!items.length)
    throw new ImageToolError(
      "INVALID_RECIPE",
      "No completed results are available.",
    );
  if (items.length > IMAGE_LIMITS.maxFiles)
    throw new ImageToolError(
      "MEMORY_LIMIT",
      "Batch ZIP exceeds the queue count limit.",
    );
  const archive = Object.create(null) as AsyncZippable;
  const used = new Set<string>();
  const manifestItems: Array<Record<string, unknown>> = [];
  let total = 0;
  for (const [index, item] of items.entries()) {
    throwIfAborted(options.signal);
    total += item.result.blob.size;
    if (total > IMAGE_LIMITS.maxBatchZipInputBytes)
      throw new ImageToolError(
        "MEMORY_LIMIT",
        `Batch ZIP inputs exceed the ${formatMiB(IMAGE_LIMITS.maxBatchZipInputBytes)} assembly limit.`,
      );
    const outputName = uniqueName(item.result.report.output.name, used);
    const reportName = uniqueName(`${stem(outputName)}.report.json`, used);
    archive[outputName] = [
      new Uint8Array(await item.result.blob.arrayBuffer()),
      { level: 6, mtime: new Date("1980-01-01T00:00:00.000Z") },
    ];
    archive[reportName] = [
      strToU8(serializeReport(item.result.report)),
      { level: 6, mtime: new Date("1980-01-01T00:00:00.000Z") },
    ];
    manifestItems.push({
      sourceName: item.sourceName,
      outputName,
      reportName,
      bytes: item.result.blob.size,
      mimeType: item.result.blob.type,
      width: item.result.width,
      height: item.result.height,
    });
    options.onProgress?.(index + 1, items.length);
  }
  archive["batch-manifest.json"] = [
    strToU8(
      `${JSON.stringify(
        {
          schema: "de.add-ideas.image-tools.batch.v1",
          schemaVersion: 1,
          generatedLocally: true,
          deterministicMetadata: true,
          items: manifestItems,
        },
        null,
        2,
      )}\n`,
    ),
    { level: 6, mtime: new Date("1980-01-01T00:00:00.000Z") },
  ];
  const bytes = await zipAsync(archive, options.signal);
  if (bytes.byteLength > IMAGE_LIMITS.maxBatchZipOutputBytes)
    throw new ImageToolError(
      "MEMORY_LIMIT",
      `Batch ZIP exceeds the ${formatMiB(IMAGE_LIMITS.maxBatchZipOutputBytes)} output limit.`,
    );
  return new Blob([ownedBuffer(bytes)], { type: "application/zip" });
 }
 function zipAsync(
  files: AsyncZippable,
  signal?: AbortSignal,
 ): Promise<Uint8Array> {
  return new Promise((resolve, reject) => {
    let settled = false;
    const terminator: { current?: () => void } = {};
    const finish = (callback: () => void) => {
      if (settled) return;
      settled = true;
      signal?.removeEventListener("abort", abort);
      globalThis.clearTimeout(timer);
      callback();
    };
    const abort = () => {
      terminator.current?.();
      finish(() =>
        reject(new DOMException("Batch ZIP cancelled.", "AbortError")),
      );
    };
    const timer = globalThis.setTimeout(() => {
      terminator.current?.();
      finish(() =>
        reject(
          new ImageToolError(
            "MEMORY_LIMIT",
            "Batch ZIP creation exceeded its time limit.",
          ),
        ),
      );
    }, IMAGE_LIMITS.processingTimeoutMs);
    signal?.addEventListener("abort", abort, { once: true });
    if (signal?.aborted) {
      abort();
      return;
    }
    terminator.current = zip(files, { level: 6 }, (error, value) => {
      finish(() => {
        if (error || !value)
          reject(error ?? new Error("ZIP writer returned no bytes."));
        else resolve(value);
      });
    });
  });
 }
 function uniqueName(name: string, used: Set<string>): string {
  if (!used.has(name)) {
    used.add(name);
    return name;
  }
  const dot = name.lastIndexOf(".");
  const base = dot > 0 ? name.slice(0, dot) : name;
  const extension = dot > 0 ? name.slice(dot) : "";
  for (let index = 2; index <= IMAGE_LIMITS.maxFiles + 1; index += 1) {
    const candidate = `${base}-${index}${extension}`;
    if (!used.has(candidate)) {
      used.add(candidate);
      return candidate;
    }
  }
  throw new ImageToolError(
    "INVALID_RECIPE",
    "Could not create collision-free batch names.",
  );
 }
 function stem(name: string): string {
  return name.replace(/\.[^.]+$/u, "");
 }
 function ownedBuffer(bytes: Uint8Array): ArrayBuffer {
  const copy = new Uint8Array(bytes.byteLength);
  copy.set(bytes);
  return copy.buffer;
 }
 function throwIfAborted(signal?: AbortSignal): void {
  if (signal?.aborted)
    throw new DOMException("Batch ZIP cancelled.", "AbortError");
 }
 function formatMiB(bytes: number): string {
  return `${Math.round(bytes / (1024 * 1024))} MiB`;
 }
@@ -0,0 +1,111 @@
 import type { ImageFormat, OutputFormat } from "./types";
 export interface CodecCapability {
  readonly format: ImageFormat;
  readonly input: "native-static-only";
  readonly headerInspection: true;
  readonly decoderAvailable: boolean;
  readonly encoderAvailable: boolean;
  readonly limitations: readonly string[];
 }
 export type CodecCapabilities = Readonly<Record<ImageFormat, CodecCapability>>;
 // Complete, one-pixel fixtures. Probing an API's presence alone would falsely
 // claim that every codec accepted by createImageBitmap is available.
 const DECODER_FIXTURES: Readonly<Record<ImageFormat, string>> = Object.freeze({
  png: "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR4AWKqt9//HwAAAP//os85+AAAAAZJREFUAwAFRQJ/BWHaWAAAAABJRU5ErkJggg==",
  jpeg: "/9j/4AAQSkZJRgABAQAAAQABAAD/2wBDAAYEBQYFBAYGBQYHBwYIChAKCgkJChQODwwQFxQYGBcUFhYaHSUfGhsjHBYWICwgIyYnKSopGR8tMC0oMCUoKSj/2wBDAQcHBwoIChMKChMoGhYaKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCgoKCj/wAARCAABAAEDASIAAhEBAxEB/8QAFQABAQAAAAAAAAAAAAAAAAAAAAb/xAAUEAEAAAAAAAAAAAAAAAAAAAAA/8QAFQEBAQAAAAAAAAAAAAAAAAAABQb/xAAUEQEAAAAAAAAAAAAAAAAAAAAA/9oADAMBAAIRAxEAPwCWAXpl/9k=",
  webp: "UklGRjYAAABXRUJQVlA4WAoAAAAAAAAAAAAAAAAAVlA4IBgAAAAwAQCdASoBAAEAAUAmJaQAA3AA/v02aAA=",
 });
 export async function probeCodecCapabilities(): Promise<CodecCapabilities> {
  const entries = await Promise.all(
    (["png", "jpeg", "webp"] as const).map(async (format) => {
      const [decoderAvailable, encoderAvailable] = await Promise.all([
        probeDecoder(format),
        probeEncoder(format),
      ]);
      return [
        format,
        {
          format,
          input: "native-static-only" as const,
          headerInspection: true as const,
          decoderAvailable,
          encoderAvailable,
          limitations: [
            "Browser-native codec; availability and pixels can vary by browser.",
            "Animated or multi-picture sources are rejected before decode.",
            "Canvas re-encoding does not preserve source metadata, ICC or HDR precision.",
          ],
        },
      ] as const;
    }),
  );
  const capabilities = new Map(entries);
  return {
    png: capabilities.get("png")!,
    jpeg: capabilities.get("jpeg")!,
    webp: capabilities.get("webp")!,
  };
 }
 export const DECLARED_UNSUPPORTED_CODECS = Object.freeze([
  "GIF",
  "AVIF",
  "HEIC/HEIF",
  "JPEG XL",
  "TIFF",
  "BMP",
 ]);
 async function probeEncoder(format: OutputFormat): Promise<boolean> {
  const mime = format === "jpeg" ? "image/jpeg" : `image/${format}`;
  try {
    if (typeof OffscreenCanvas !== "undefined") {
      const canvas = new OffscreenCanvas(1, 1);
      const context = canvas.getContext("2d");
      if (!context) return false;
      context.fillRect(0, 0, 1, 1);
      const blob = await canvas.convertToBlob({ type: mime, quality: 0.8 });
      return blob.type === mime;
    }
    if (typeof document === "undefined") return false;
    const canvas = document.createElement("canvas");
    canvas.width = 1;
    canvas.height = 1;
    const context = canvas.getContext("2d");
    if (!context) return false;
    context.fillRect(0, 0, 1, 1);
    const blob = await new Promise<Blob | null>((resolve) =>
      canvas.toBlob(resolve, mime, 0.8),
    );
    return blob?.type === mime;
  } catch {
    return false;
  }
 }
 async function probeDecoder(format: ImageFormat): Promise<boolean> {
  if (typeof createImageBitmap !== "function" || typeof atob !== "function")
    return false;
  let bitmap: ImageBitmap | undefined;
  try {
    const binary = atob(DECODER_FIXTURES[format]);
    const bytes = Uint8Array.from(binary, (character) =>
      character.charCodeAt(0),
    );
    const mime = format === "jpeg" ? "image/jpeg" : `image/${format}`;
    bitmap = await createImageBitmap(new Blob([bytes], { type: mime }), {
      imageOrientation: "none",
      premultiplyAlpha: "default",
      colorSpaceConversion: "default",
    });
    return bitmap.width === 1 && bitmap.height === 1;
  } catch {
    return false;
  } finally {
    bitmap?.close();
  }
 }
@@ -1,17 +1,7 @@
 import { triggerBlobDownload } from "@add-ideas/toolbox-helpers";
 export function downloadBlob(blob: Blob, filename: string): void {
-  const url = URL.createObjectURL(blob);
+  triggerBlobDownload(blob, filename);
  try {
    const anchor = document.createElement("a");
    anchor.href = url;
    anchor.download = filename;
    anchor.rel = "noopener";
    anchor.style.display = "none";
    document.body.append(anchor);
    anchor.click();
    anchor.remove();
  } finally {
    window.setTimeout(() => URL.revokeObjectURL(url), 0);
  }
 }
 export function downloadText(
@@ -1,3 +1,4 @@
 import { formatBytes } from "@add-ideas/toolbox-helpers";
 import { ImageToolError } from "./errors";
 import type { ImageInspection } from "./types";
@@ -13,6 +14,9 @@ export const IMAGE_LIMITS = Object.freeze({
  maxHeldOutputBytes: 256 * 1024 * 1024,
  previewMaxEdge: 1_600,
  processingTimeoutMs: 120_000,
  maxRecipeCharacters: 64 * 1024,
  maxBatchZipInputBytes: 128 * 1024 * 1024,
  maxBatchZipOutputBytes: 160 * 1024 * 1024,
 });
 export function assertFileWithinLimits(file: File): void {
@@ -136,14 +140,4 @@ function checkedProduct(left: number, right: number, message: string): number {
  return value;
 }
-export function formatBytes(value: number): string {
+export { formatBytes };
  if (value < 1024) return `${value} B`;
  const units = ["KiB", "MiB", "GiB"] as const;
  let amount = value / 1024;
  let index = 0;
  while (amount >= 1024 && index < units.length - 1) {
    amount /= 1024;
    index += 1;
  }
  return `${amount >= 10 ? amount.toFixed(1) : amount.toFixed(2)} ${units[index]}`;
 }
@@ -1,10 +1,12 @@
 import {
  startWorkerJob,
  WorkerJobTimeoutError,
 } from "@add-ideas/toolbox-helpers";
 import { processImageOnCanvas, type ProcessingStage } from "./canvas-pipeline";
 import { ImageToolError, type ImageErrorCode } from "./errors";
 import { IMAGE_LIMITS } from "./limits";
 import type { ProcessImageRequest, ProcessImageResult } from "./types";
 let requestSequence = 0;
 export async function processImage(
  request: ProcessImageRequest,
  options: {
@@ -23,71 +25,31 @@ function processInWorker(
    readonly onStage?: (stage: ProcessingStage) => void;
  },
 ): Promise<ProcessImageResult> {
  const id = ++requestSequence;
  return new Promise((resolve, reject) => {
  const worker = new Worker(
    new URL("../workers/image.worker.ts", import.meta.url),
-      {
+    { type: "module", name: "image-tools-processor" },
        type: "module",
        name: `image-tools-${id}`,
      },
  );
-    let settled = false;
+  const task = startWorkerJob<
-    const finish = (callback: () => void) => {
+    ProcessImageRequest,
-      if (settled) return;
+    ProcessImageResult,
-      settled = true;
+    ProcessingStage,
-      window.clearTimeout(timeout);
+    { readonly code: ImageErrorCode; readonly message: string }
-      options.signal?.removeEventListener("abort", abort);
+  >(worker, request, {
-      worker.terminate();
+    signal: options.signal,
-      callback();
+    timeoutMs: IMAGE_LIMITS.processingTimeoutMs,
-    };
+    onProgress: options.onStage,
-    const abort = () => {
+    deserializeError: (error) => new ImageToolError(error.code, error.message),
-      finish(() =>
+    workerFailureMessage: "The image worker stopped unexpectedly.",
-        reject(
+  });
-          new ImageToolError("ABORTED", "The image operation was cancelled."),
+  return task.promise.catch((error: unknown) => {
-        ),
+    if (error instanceof WorkerJobTimeoutError) {
-      );
+      throw new ImageToolError(
    };
    const timeout = window.setTimeout(() => {
      finish(() =>
        reject(
          new ImageToolError(
        "PROCESSING_TIMEOUT",
        `Image processing exceeded the ${IMAGE_LIMITS.processingTimeoutMs / 1000}-second safety limit.`,
-          ),
+        { cause: error },
        ),
      );
    }, IMAGE_LIMITS.processingTimeoutMs);
    options.signal?.addEventListener("abort", abort, { once: true });
    worker.onerror = () => {
      finish(() =>
        reject(
          new ImageToolError(
            "DECODE_FAILED",
            "The image worker stopped unexpectedly.",
          ),
        ),
      );
    };
    worker.onmessage = (
      event: MessageEvent<
        | { id: number; type: "progress"; stage: ProcessingStage }
        | { id: number; type: "result"; result: ProcessImageResult }
        | { id: number; type: "error"; code: ImageErrorCode; message: string }
      >,
    ) => {
      const data = event.data;
      if (data.id !== id || settled) return;
      if (data.type === "progress") {
        options.onStage?.(data.stage);
      } else if (data.type === "result") {
        finish(() => resolve(data.result));
      } else {
        finish(() => reject(new ImageToolError(data.code, data.message)));
    }
-    };
+    throw error;
    if (options.signal?.aborted) abort();
    else worker.postMessage({ id, request });
  });
 }
@@ -0,0 +1,168 @@
 import { ImageToolError } from "./errors";
 import { IMAGE_LIMITS } from "./limits";
 import type { OutputSettings, TransformRecipe } from "./types";
 export interface ImageRecipeDocument {
  readonly schema: "de.add-ideas.image-tools.recipe.v1";
  readonly schemaVersion: 1;
  readonly recipe: TransformRecipe;
  readonly output: OutputSettings;
  readonly policy: {
    readonly metadataCopied: false;
    readonly colorProfilePreserved: false;
  };
 }
 export function createRecipeDocument(
  recipe: TransformRecipe,
  output: OutputSettings,
 ): ImageRecipeDocument {
  validateRecipe(recipe, output);
  return {
    schema: "de.add-ideas.image-tools.recipe.v1",
    schemaVersion: 1,
    recipe: cloneRecipe(recipe),
    output: { ...output },
    policy: { metadataCopied: false, colorProfilePreserved: false },
  };
 }
 export function serializeRecipe(
  recipe: TransformRecipe,
  output: OutputSettings,
 ): string {
  return `${JSON.stringify(createRecipeDocument(recipe, output), null, 2)}\n`;
 }
 export function parseRecipe(source: string): ImageRecipeDocument {
  if (source.length > IMAGE_LIMITS.maxRecipeCharacters)
    throw new ImageToolError(
      "INVALID_RECIPE",
      `Recipe exceeds ${IMAGE_LIMITS.maxRecipeCharacters.toLocaleString()} characters.`,
    );
  let value: unknown;
  try {
    value = JSON.parse(source) as unknown;
  } catch (error) {
    throw new ImageToolError(
      "INVALID_RECIPE",
      error instanceof Error ? error.message : "Recipe JSON is invalid.",
    );
  }
  const document = record(value, "Recipe");
  if (
    document.schema !== "de.add-ideas.image-tools.recipe.v1" ||
    document.schemaVersion !== 1
  )
    throw new ImageToolError(
      "INVALID_RECIPE",
      "Recipe identity or version is unsupported.",
    );
  const recipeValue = record(document.recipe, "Transform recipe");
  const crop = record(recipeValue.crop, "Crop");
  const resize = record(recipeValue.resize, "Resize");
  const outputValue = record(document.output, "Output settings");
  const recipe: TransformRecipe = {
    crop: {
      x: number(crop.x, "Crop x"),
      y: number(crop.y, "Crop y"),
      width: number(crop.width, "Crop width"),
      height: number(crop.height, "Crop height"),
    },
    rotation: number(
      recipeValue.rotation,
      "Rotation",
    ) as TransformRecipe["rotation"],
    flipHorizontal: boolean(recipeValue.flipHorizontal, "Horizontal flip"),
    flipVertical: boolean(recipeValue.flipVertical, "Vertical flip"),
    resize: {
      mode: string(
        resize.mode,
        "Resize mode",
      ) as TransformRecipe["resize"]["mode"],
      width: number(resize.width, "Resize width"),
      height: number(resize.height, "Resize height"),
    },
  };
  const output: OutputSettings = {
    format: string(
      outputValue.format,
      "Output format",
    ) as OutputSettings["format"],
    quality: number(outputValue.quality, "Output quality"),
    background: string(outputValue.background, "Output background"),
  };
  validateRecipe(recipe, output);
  return createRecipeDocument(recipe, output);
 }
 export function validateRecipe(
  recipe: TransformRecipe,
  output: OutputSettings,
 ): void {
  const crop = recipe.crop;
  for (const [label, value] of Object.entries(crop))
    if (!Number.isFinite(value)) invalid(`${label} must be finite.`);
  if (
    crop.x < 0 ||
    crop.y < 0 ||
    crop.width <= 0 ||
    crop.height <= 0 ||
    crop.x + crop.width > 1 + Number.EPSILON ||
    crop.y + crop.height > 1 + Number.EPSILON
  )
    invalid("Crop must be a positive normalized rectangle inside the image.");
  if (![0, 90, 180, 270].includes(recipe.rotation))
    invalid("Rotation must be 0, 90, 180 or 270 degrees.");
  if (!["none", "fit", "fill", "exact"].includes(recipe.resize.mode))
    invalid("Resize mode is unsupported.");
  for (const [label, value] of [
    ["width", recipe.resize.width],
    ["height", recipe.resize.height],
  ] as const)
    if (
      !Number.isSafeInteger(value) ||
      value < 1 ||
      value > IMAGE_LIMITS.maxDimension
    )
      invalid(`Resize ${label} must be a whole pixel within the image limit.`);
  if (!["png", "jpeg", "webp"].includes(output.format))
    invalid("Output format is unsupported.");
  if (
    !Number.isFinite(output.quality) ||
    output.quality < 0 ||
    output.quality > 1
  )
    invalid("Output quality must be between 0 and 1.");
  if (!/^#[0-9a-f]{6}$/iu.test(output.background))
    invalid("Output background must be a six-digit hexadecimal color.");
 }
 function cloneRecipe(recipe: TransformRecipe): TransformRecipe {
  return { ...recipe, crop: { ...recipe.crop }, resize: { ...recipe.resize } };
 }
 function record(value: unknown, label: string): Record<string, unknown> {
  if (!value || typeof value !== "object" || Array.isArray(value))
    invalid(`${label} must be an object.`);
  return value as Record<string, unknown>;
 }
 function number(value: unknown, label: string): number {
  if (typeof value !== "number") invalid(`${label} must be a number.`);
  return value;
 }
 function string(value: unknown, label: string): string {
  if (typeof value !== "string") invalid(`${label} must be a string.`);
  return value;
 }
 function boolean(value: unknown, label: string): boolean {
  if (typeof value !== "boolean") invalid(`${label} must be a boolean.`);
  return value;
 }
 function invalid(message: string): never {
  throw new ImageToolError("INVALID_RECIPE", message);
 }
@@ -335,6 +335,24 @@ body {
  margin-bottom: 0.7rem;
 }
 .queue-heading-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.4rem;
 }
 .quiet-button {
  min-height: 2rem;
  padding: 0.34rem 0.5rem;
  border: 1px solid var(--toolbox-border);
  border-radius: 0.5rem;
  background: var(--toolbox-surface);
  color: var(--toolbox-text);
  font-size: 0.68rem;
  line-height: 1.2;
 }
 .queue-empty {
  margin: 0;
  padding: 1rem 0.2rem;
@@ -585,9 +603,10 @@ body {
 .image-stage {
  min-height: 15rem;
-  display: grid;
+  height: clamp(18rem, 38vw, 36rem);
-  place-items: center;
+  display: block;
-  overflow: hidden;
+  overflow: auto;
  padding: 0.3rem;
  border: 1px solid var(--toolbox-border);
  border-radius: 0.62rem;
  background: var(--toolbox-surface-soft);
@@ -624,12 +643,16 @@ body {
  background-size: 16px 16px;
 }
-.image-stage img {
+.zoom-canvas {
  position: relative;
  margin: auto;
  line-height: 0;
 }
 .zoom-canvas img {
  width: 100%;
-  height: 100%;
+  height: auto;
  max-height: 36rem;
  display: block;
  object-fit: contain;
  user-select: none;
 }
@@ -642,6 +665,89 @@ body {
  text-align: center;
 }
 .preview-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: 0.35rem;
 }
 .preview-toolbar button {
  min-width: 2.15rem;
  min-height: 2.15rem;
  padding: 0.3rem 0.48rem;
  font-size: 0.72rem;
 }
 .preview-toolbar label {
  width: 9rem;
  display: grid;
  gap: 0.1rem;
  color: var(--toolbox-muted);
  font-size: 0.62rem;
  text-align: center;
 }
 .preview-toolbar input {
  min-height: 1rem;
  padding: 0;
 }
 .crop-selection {
  position: absolute;
  z-index: 2;
  touch-action: none;
  border: 2px solid #ffffff;
  box-shadow:
    0 0 0 1px rgb(20 24 45 / 90%),
    0 0 0 9999px rgb(20 24 45 / 42%);
  cursor: move;
 }
 .crop-selection:focus-visible {
  outline: 3px solid var(--toolbox-focus);
  outline-offset: 3px;
 }
 .crop-grid,
 .crop-grid::before,
 .crop-grid::after {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
 }
 .crop-grid {
  border-right: 1px solid rgb(255 255 255 / 55%);
  border-left: 1px solid rgb(255 255 255 / 55%);
  transform: scaleX(0.3333);
 }
 .crop-grid::before,
 .crop-grid::after {
  border-top: 1px solid rgb(255 255 255 / 55%);
  transform: scaleY(0.3333);
 }
 .crop-grid::after {
  transform: scaleY(-0.3333);
 }
 .crop-handle {
  position: absolute;
  right: -0.45rem;
  bottom: -0.45rem;
  width: 0.9rem;
  height: 0.9rem;
  border: 2px solid #ffffff;
  border-radius: 50%;
  background: var(--toolbox-accent);
  box-shadow: 0 0 0 1px rgb(20 24 45 / 80%);
  cursor: nwse-resize;
 }
 .preview-note {
  margin: 0.62rem 0 0;
  color: var(--toolbox-muted);
@@ -664,6 +770,34 @@ body {
  border-radius: 0.66rem;
 }
 .button-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
 }
 .recipe-actions > * {
  flex: 1 1 7rem;
 }
 .codec-profile {
  color: var(--toolbox-muted);
  font-size: 0.66rem;
  line-height: 1.5;
 }
 .codec-profile summary {
  color: var(--toolbox-text);
  cursor: pointer;
  font-weight: 720;
 }
 .codec-profile ul {
  margin: 0.5rem 0 0;
  padding-left: 1rem;
 }
 .controls-panel legend {
  padding: 0 0.35rem;
  font-size: 0.72rem;
@@ -3,12 +3,21 @@
  "schemaVersion": 1,
  "id": "de.add-ideas.image-tools",
  "name": "Image Tools",
-  "version": "0.1.0",
+  "version": "0.2.0",
-  "description": "Edit and batch-process raster images locally in the browser.",
+  "description": "Crop, resize, convert and batch-process static raster images locally.",
  "entry": "./",
  "icon": "./favicon.svg",
  "categories": ["graphics", "image", "productivity"],
-  "tags": ["image", "resize", "crop", "convert", "compress"],
+  "tags": [
    "image",
    "resize",
    "crop",
    "convert",
    "compress",
    "recipe",
    "batch",
    "zip"
  ],
  "integration": {
    "contextVersion": 1,
    "launchModes": ["navigate", "new-tab"],
@@ -21,9 +30,56 @@
    "crossOriginIsolated": false,
    "topLevelContext": false
  },
  "io": {
    "accepts": [
      {
        "mediaType": "image/png",
        "extensions": [".png"],
        "label": "Static PNG"
      },
      {
        "mediaType": "image/jpeg",
        "extensions": [".jpg", ".jpeg"],
        "label": "JPEG"
      },
      {
        "mediaType": "image/webp",
        "extensions": [".webp"],
        "label": "Static WebP when browser-supported"
      },
      {
        "mediaType": "application/json",
        "extensions": [".json"],
        "label": "Image transform recipe"
      }
    ],
    "produces": [
      { "mediaType": "image/png", "extensions": [".png"], "label": "PNG" },
      { "mediaType": "image/jpeg", "extensions": [".jpg"], "label": "JPEG" },
      {
        "mediaType": "image/webp",
        "extensions": [".webp"],
        "label": "WebP when browser-supported"
      },
      {
        "mediaType": "application/zip",
        "extensions": [".zip"],
        "label": "Bounded batch ZIP"
      },
      {
        "mediaType": "application/json",
        "extensions": [".json"],
        "label": "Recipe and processing reports"
      }
    ]
  },
  "capabilities": {
    "required": ["canvas-2d", "workers"],
    "optional": ["create-image-bitmap", "offscreen-canvas"]
  },
  "privacy": {
    "processing": "local",
-    "fileUploads": false,
+    "fileUploads": true,
    "telemetry": false,
    "label": "Inputs stay in this browser; nothing is uploaded."
  },
@@ -1 +1 @@
-export const APP_VERSION = "0.1.0";
+export const APP_VERSION = "0.2.0";
@@ -1,5 +1,6 @@
 /// <reference lib="webworker" />
 import { createWorkerJobMessageHandler } from "@add-ideas/toolbox-helpers";
 import {
  processImageOnCanvas,
  type ProcessingStage,
@@ -7,58 +8,26 @@ import {
 import { toImageToolError } from "../image/errors";
 import type { ProcessImageRequest } from "../image/types";
 interface RequestMessage {
  readonly id: number;
  readonly request: ProcessImageRequest;
 }
 type ResponseMessage =
  | {
      readonly id: number;
      readonly type: "progress";
      readonly stage: ProcessingStage;
    }
  | {
      readonly id: number;
      readonly type: "result";
      readonly result: Awaited<ReturnType<typeof processImageOnCanvas>>;
    }
  | {
      readonly id: number;
      readonly type: "error";
      readonly code: string;
      readonly message: string;
    };
 const scope = self as DedicatedWorkerGlobalScope;
-scope.onmessage = (event: MessageEvent<RequestMessage>) => {
+scope.onmessage = createWorkerJobMessageHandler<
-  const { id, request } = event.data;
+  ProcessImageRequest,
-  void processImageOnCanvas(request, {
+  Awaited<ReturnType<typeof processImageOnCanvas>>,
-    onStage: (stage) => {
+  ProcessingStage,
-      scope.postMessage({
+  { readonly code: string; readonly message: string }
-        id,
+>(
-        type: "progress",
+  (request, context) =>
-        stage,
+    processImageOnCanvas(request, {
-      } satisfies ResponseMessage);
+      signal: context.signal,
-    },
+      onStage: (stage) => context.report(stage),
-  })
+    }),
-    .then((result) => {
+  (response) => scope.postMessage(response),
-      scope.postMessage({
+  {
-        id,
+    serializeError: (error) => {
        type: "result",
        result,
      } satisfies ResponseMessage);
    })
    .catch((error: unknown) => {
      const normalized = toImageToolError(error);
-      scope.postMessage({
+      return { code: normalized.code, message: normalized.message };
-        id,
+    },
-        type: "error",
+  },
-        code: normalized.code,
+);
        message: normalized.message,
      } satisfies ResponseMessage);
    });
 };
 export {};
@@ -42,7 +42,7 @@ test("serves the release identity and hardened headers", async ({
  const manifest = await request.get("/deep/nested/image/toolbox-app.json");
  await expect(manifest.json()).resolves.toMatchObject({
    id: "de.add-ideas.image-tools",
-    version: "0.1.0",
+    version: "0.2.0",
    entry: "./",
  });
 });
@@ -54,7 +54,7 @@ test("inspects, previews, resizes and exports a static PNG locally", async ({
  page.on("pageerror", (error) => errors.push(error.message));
  const external = await localOnly(page);
  await page.goto("/deep/nested/image/");
-  await page.locator('input[type="file"]').setInputFiles({
+  await page.locator('.drop-zone input[type="file"]').setInputFiles({
    name: "tiny.png",
    mimeType: "image/png",
    buffer: Buffer.from(VALID_PNG_BASE64, "base64"),
@@ -83,7 +83,7 @@ test("inspects, previews, resizes and exports a static PNG locally", async ({
 test("rejects an animated PNG without decoding a frame", async ({ page }) => {
  await page.goto("/deep/nested/image/");
-  await page.locator('input[type="file"]').setInputFiles({
+  await page.locator('.drop-zone input[type="file"]').setInputFiles({
    name: "animated.png",
    mimeType: "image/png",
    buffer: Buffer.from(pngFixture(8, 8, { animated: true })),
@@ -101,7 +101,7 @@ test("uses exact native JPEG and WebP codec capabilities", async ({ page }) => {
  const webp = await browserRaster(page, "image/webp");
  expect(jpeg.mimeType).toBe("image/jpeg");
  expect(webp.mimeType).toBe("image/webp");
-  await page.locator('input[type="file"]').setInputFiles([
+  await page.locator('.drop-zone input[type="file"]').setInputFiles([
    {
      name: "sample.jpg",
      mimeType: jpeg.mimeType,
@@ -136,6 +136,52 @@ test("uses exact native JPEG and WebP codec capabilities", async ({ page }) => {
  expect(external).toEqual([]);
 });
 test("zooms, exposes the interactive crop and exports a reusable recipe", async ({
  page,
 }) => {
  await page.goto("/deep/nested/image/");
  await page.locator('.drop-zone input[type="file"]').setInputFiles({
    name: "crop.png",
    mimeType: "image/png",
    buffer: Buffer.from(VALID_PNG_BASE64, "base64"),
  });
  await expect(
    page.getByRole("img", { name: "crop.png, edited preview" }),
  ).toBeVisible();
  await page.getByRole("slider", { name: "Zoom" }).fill("175");
  await expect(page.getByText("Zoom 175%")).toBeVisible();
  await page.getByLabel("Width %").fill("60");
  await expect(
    page.getByRole("application", { name: /Interactive crop rectangle/iu }),
  ).toBeVisible();
  const recipeDownload = page.waitForEvent("download");
  await page.getByRole("button", { name: "Save recipe" }).click();
  expect((await recipeDownload).suggestedFilename()).toBe(
    "image-tools-recipe.json",
  );
  await page.getByText("Native codec capabilities").click();
  await expect(
    page.getByText(/PNG decode available · encode available/iu),
  ).toBeVisible();
 });
 test("packages completed queue outputs into one batch ZIP", async ({
  page,
 }) => {
  await page.goto("/deep/nested/image/");
  const buffer = Buffer.from(VALID_PNG_BASE64, "base64");
  await page.locator('.drop-zone input[type="file"]').setInputFiles([
    { name: "one.png", mimeType: "image/png", buffer },
    { name: "two.png", mimeType: "image/png", buffer },
  ]);
  await expect(page.getByRole("heading", { name: "one.png" })).toBeVisible();
  await page.getByRole("button", { name: "Process queue" }).click();
  await expect(page.getByText(/Finished 2 of 2/iu)).toBeVisible();
  const batch = page.waitForEvent("download");
  await page.getByRole("button", { name: "Batch ZIP (2)" }).click();
  expect((await batch).suggestedFilename()).toBe("image-tools-batch.zip");
 });
 async function browserRaster(page: Page, type: "image/jpeg" | "image/webp") {
  return page.evaluate(async (mimeType) => {
    const canvas = document.createElement("canvas");
@@ -0,0 +1,18 @@
 import { expect, test } from "@playwright/test";
 test("keeps the primary workspace inside a narrow viewport", async ({
  page,
 }) => {
  await page.goto("/deep/nested/image/");
  await expect(page.locator("main").first()).toBeVisible();
  await expect(
    page.locator("main .loading, main .workbench-loading"),
  ).toHaveCount(0);
  const widths = await page.evaluate(() => ({
    content: document.documentElement.scrollWidth,
    viewport: document.documentElement.clientWidth,
  }));
  expect(widths.viewport).toBeLessThanOrEqual(430);
  expect(widths.content).toBeLessThanOrEqual(widths.viewport + 1);
 });
@@ -0,0 +1,113 @@
 import { unzipSync } from "fflate";
 import { describe, expect, it } from "vitest";
 import { createBatchZip } from "../../src/image/batch-zip";
 import { parseRecipe, serializeRecipe } from "../../src/image/recipes";
 import {
  DEFAULT_OUTPUT,
  DEFAULT_RECIPE,
  type ProcessImageResult,
 } from "../../src/image/types";
 describe("versioned image recipes", () => {
  it("round-trips bounded transform and output settings", () => {
    const recipe = {
      ...DEFAULT_RECIPE,
      crop: { x: 0.1, y: 0.2, width: 0.5, height: 0.6 },
      rotation: 90 as const,
    };
    expect(parseRecipe(serializeRecipe(recipe, DEFAULT_OUTPUT))).toMatchObject({
      schema: "de.add-ideas.image-tools.recipe.v1",
      recipe,
      output: DEFAULT_OUTPUT,
      policy: { metadataCopied: false, colorProfilePreserved: false },
    });
  });
  it("rejects out-of-image crops and substituted formats", () => {
    const value = JSON.parse(
      serializeRecipe(DEFAULT_RECIPE, DEFAULT_OUTPUT),
    ) as Record<string, unknown>;
    (value.recipe as { crop: { x: number } }).crop.x = 1.5;
    expect(() => parseRecipe(JSON.stringify(value))).toThrow(
      /inside the image/iu,
    );
    (value.recipe as { crop: { x: number } }).crop.x = 0;
    (value.output as { format: string }).format = "avif";
    expect(() => parseRecipe(JSON.stringify(value))).toThrow(/unsupported/iu);
  });
 });
 describe("bounded batch ZIP", () => {
  it("creates one deterministic-named archive with reports and a manifest", async () => {
    const first = result("same-edited.png", new Uint8Array([1, 2, 3]));
    const second = result("same-edited.png", new Uint8Array([4, 5]));
    const blob = await createBatchZip([
      { sourceName: "first.png", result: first },
      { sourceName: "second.png", result: second },
    ]);
    const entries = unzipSync(new Uint8Array(await blob.arrayBuffer()));
    expect(Object.keys(entries).sort()).toEqual([
      "batch-manifest.json",
      "same-edited-2.png",
      "same-edited-2.report.json",
      "same-edited.png",
      "same-edited.report.json",
    ]);
    expect(
      JSON.parse(new TextDecoder().decode(entries["batch-manifest.json"])),
    ).toMatchObject({
      schema: "de.add-ideas.image-tools.batch.v1",
      items: [
        { sourceName: "first.png", outputName: "same-edited.png" },
        { sourceName: "second.png", outputName: "same-edited-2.png" },
      ],
    });
  });
 });
 function result(name: string, bytes: Uint8Array): ProcessImageResult {
  const owned = new Uint8Array(bytes.byteLength);
  owned.set(bytes);
  const blob = new Blob([owned.buffer], { type: "image/png" });
  return {
    blob,
    width: 1,
    height: 1,
    renderedWidth: 1,
    renderedHeight: 1,
    report: {
      schemaVersion: 1,
      source: {
        name: "source.png",
        bytes: bytes.byteLength,
        format: "png",
        width: 1,
        height: 1,
        orientation: 1,
        metadata: {
          exif: false,
          xmp: false,
          icc: false,
          comments: false,
          text: false,
          physicalDimensions: false,
          multiPicture: false,
        },
      },
      transform: DEFAULT_RECIPE,
      output: {
        name,
        bytes: bytes.byteLength,
        mimeType: "image/png",
        width: 1,
        height: 1,
        quality: null,
        background: null,
      },
      metadataPolicy: { copied: false, statement: "not copied" },
      colorPolicy: { profilePreserved: false, statement: "not preserved" },
      limitations: [],
      warnings: [],
    },
  };
 }
`@@ -1 +1 @@`
	`export const APP_VERSION = "0.1.0";`	`export const APP_VERSION = "0.2.0";`