officeimo-conversion-operator
Use when contributing code that changes or validates OfficeIMO conversion behavior, especially DOCX/XLSX/PPTX/HTML/Markdown/PDF byte and stream APIs, browser-safe paths, or fidelity diagnostics. Prefer OfficeIMO core APIs first and keep hosts, websites, cmdlets, MCP tools, and demos thin.
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- Repository
- evotecit/officeimo
- Last source activity
- September 30, 2026 at 21:19
- Detected SKILL.md language
- English
- Stars
- 565
- Forks
- 75
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- officeimo-conversion-operator
- description
- Use when contributing code that changes or validates OfficeIMO conversion behavior, especially DOCX/XLSX/PPTX/HTML/Markdown/PDF byte and stream APIs, browser-safe paths, or fidelity diagnostics. Prefer OfficeIMO core APIs first and keep hosts, websites, cmdlets, MCP tools, and demos thin.
# OfficeIMO Conversion Operator
Use this skill for OfficeIMO conversion work across Word, Excel, PowerPoint, Markdown, HTML, and PDF.
## Golden Path
1. Start by locating the owning reusable API.
- Word behavior belongs under `OfficeIMO.Word*`.
- Excel behavior belongs under `OfficeIMO.Excel*`.
- PowerPoint behavior belongs under `OfficeIMO.PowerPoint*`.
- Shared PDF behavior belongs in the PDF engine projects, not in a host wrapper.
2. Treat file paths as adapter concerns.
- Prefer byte array and stream entrypoints for conversion APIs.
- Keep browser, CLI, PowerShell, MCP, and website shells as orchestration only.
3. Validate real artifacts.
- For PDF output, at minimum verify the returned bytes start with `%PDF`.
- For browser work, validate inside a real Blazor WebAssembly runtime before calling it GitHub Pages-safe.
- For fidelity work, keep a named fixture and record the expected known gap.
4. Separate platform limits from conversion defects.
- Browser-safe means no Office automation, LibreOffice process, native graphics dependency, server filesystem dependency, or environment-only state.
- Font coverage, Unicode embedding, large memory use, and startup size are conversion quality gaps even when the browser runtime works.
5. Keep public surfaces friendly.
- Add simple options and presets at host layers only after the reusable OfficeIMO API already supports the behavior.
- Avoid hidden environment-variable switches for behavior that should be an explicit option.
## Useful Checks
```powershell
dotnet build OfficeIMO.Word.Pdf\OfficeIMO.Word.Pdf.csproj -c Release -f net10.0
dotnet test OfficeIMO.Word.Tests\OfficeIMO.Word.Tests.csproj -c Release --filter "*SaveAsPdf*"
dotnet test OfficeIMO.Html.Tests\OfficeIMO.Html.Tests.csproj -c Release --filter "*Html*"
dotnet test OfficeIMO.Markdown.Tests\OfficeIMO.Markdown.Tests.csproj -c Release --filter "*Markdown*"
```
When the work targets GitHub Pages or OfficeIMO.com, pair these with the browser conversion proof described in `Docs/officeimo.blazor-wasm-conversion-proof.md`.
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