# Format support

Office Tools 0.1.0 targets read-only browser viewing, not editing or
pixel-identical reproduction.

| Family                       | Extensions | 0.1 viewing coverage                                                                                           |
| ---------------------------- | ---------- | -------------------------------------------------------------------------------------------------------------- |
| Office Open XML document     | `.docx`    | Paginated sections, text, lists, tables, images, shapes, charts, headers/footers, comments, selection and find |
| Office Open XML spreadsheet  | `.xlsx`    | Sheets, cached values/formulas, styles, merges, frozen panes, images, charts, comments, navigation and find    |
| Office Open XML presentation | `.pptx`    | Slides/masters, text, shapes, images, tables, charts, notes, selection, navigation and find                    |
| OpenDocument text            | `.odt`     | Semantic headings, paragraphs/runs, lists, tables, packaged images, metadata and foot/endnotes                 |
| OpenDocument spreadsheet     | `.ods`     | Sheets, typed/cached values, formulas, repeats, merges, annotations, basic safe styling and paged rows         |
| OpenDocument presentation    | `.odp`     | Slide order, positioned text/shapes, groups, tables, packaged images, notes and basic safe styling             |

Legacy compound-binary `.doc`, `.xls` and `.ppt` formats are explicitly outside
the first package-reader slice. They require a distinct, bounded parser and must
not be misidentified as their XML successors.

## Never executed

Macros, VBA projects, embedded executables, OLE objects, scripts, remote
templates and automatic external relationships remain inert. Unsupported
content is reported in diagnostics where it can be identified.

## Known boundaries

- Spreadsheet formulas display their saved cached result; Office Tools does not
  recalculate them or refresh pivots and external data.
- Presentation animations and transitions are not reproduced. Embedded media
  playback is disabled in the first release.
- OLE, ActiveX, VBA and OpenDocument embedded objects remain inert. The ODF
  semantic view reports and omits embedded objects such as chart subdocuments.
- OpenDocument slide masters/layouts are identified but not fully reproduced;
  uncommon drawing transforms and office-suite-specific layout can be
  approximated.
- Fonts are substituted locally. Remote fonts, templates, images and links are
  never fetched.
- ODS renders 200 rows at a time and up to 256 columns. Empty full-grid tails
  emitted by office suites are deliberately trimmed.

## Safety limits

The source-file limit is 100 MiB. OOXML and ODF packages also enforce expanded
entry, total expanded byte, entry-count and image limits. ODF additionally
bounds compression ratio, XML depth/nodes, text, repeats, cells and assets.
Files that exceed a boundary fail with a visible diagnostic instead of being
partially trusted.