Network Tools
Calculate and construct network values locally in the browser.
Network Tools is a standalone local-first application in the add·ideas Toolbox. Inputs are processed in the browser and are not uploaded.
Version 0.1 scope
- IPv4 and IPv6 parsing, canonicalisation, prefix ranges and IPv4 broadcast calculation
- URL resolution, component/query inspection and password-redacted display without requesting the URL
- Bounded A, AAAA, CNAME, MX, SRV, CAA and TXT zone-record construction
- Bounded response-header inspection and explicit CSP construction
- A compact offline extension/MIME reference
The application treats pasted values as untrusted, applies explicit length and numeric limits, and makes no DNS, URL or HTTP request. See docs/ARCHITECTURE.md and docs/PRIVACY-SECURITY.md.
Development
Requires Node.js 22 and npm 11.
npm ci
npm run check
npm run test:browser
Release
npm run release:artifact creates a deterministic release/network-tools-0.1.0.zip and checksum sidecar.
Licence
GPL-3.0-or-later. Runtime dependencies retain their own licences; see THIRD_PARTY_NOTICES.md.