name	officeimo-conversion-operator
description	Use when changing or validating OfficeIMO document conversion behavior, especially DOCX/XLSX/PPTX/HTML/Markdown/PDF byte and stream conversions, browser-safe conversion 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

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.
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.
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.
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.
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

dotnet build OfficeIMO.Word.Pdf\OfficeIMO.Word.Pdf.csproj -c Release -f net10.0
dotnet test OfficeIMO.Tests\OfficeIMO.Tests.csproj -c Release --filter "*SaveAsPdf*"
dotnet test OfficeIMO.Tests\OfficeIMO.Tests.csproj -c Release --filter "*Html*|*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.

OfficeIMO Conversion Operator

Use this skill for OfficeIMO conversion work across Word, Excel, PowerPoint, Markdown, HTML, and PDF.

Golden Path

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.

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.

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.

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.

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

dotnet build OfficeIMO.Word.Pdf\OfficeIMO.Word.Pdf.csproj -c Release -f net10.0 dotnet test OfficeIMO.Tests\OfficeIMO.Tests.csproj -c Release --filter "*SaveAsPdf*" dotnet test OfficeIMO.Tests\OfficeIMO.Tests.csproj -c Release --filter "*Html*|*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.

officeimo-conversion-operator