Document Conversion Guides for .NET

OfficeIMO conversion is built for .NET applications that need more than a file-extension switch. Each focused package owns a document family, while adapters add PDF, HTML, Markdown, OpenDocument, Google Workspace, and normalized extraction only when the workflow needs them.

Start with the route you need

Input and output	Best starting point	What you can inspect
DOC and DOCX	`OfficeIMO.Word`	Feature-level compatibility, preservation, and conversion diagnostics
XLS and XLSX	`OfficeIMO.Excel`	Worksheets, formulas, styles, charts, and legacy BIFF decisions
XLSB and XLSX	`OfficeIMO.Excel`	Native binary-workbook parsing and write diagnostics
PPT and PPTX	`OfficeIMO.PowerPoint`	Slides, shapes, text, media, notes, charts, and fallback decisions
Word to PDF	`OfficeIMO.Word.Pdf`	Publishing warnings, fonts, images, tables, sections, and output status
Excel to PDF	`OfficeIMO.Excel.Pdf`	Worksheet selection, pagination, page setup, styles, and export warnings
Publisher to PDF	`OfficeIMO.Publisher.Pdf`	Page sizes, searchable text, and fidelity diagnostics for Publisher archives
PDF to Word	`OfficeIMO.Word.Pdf`	Editable reconstruction or rendered-page output with explicit loss diagnostics
PDF tables to Excel	`OfficeIMO.Excel.Pdf`	Detected table rows and cells, omitted page content, and import limits
PDF to PowerPoint	`OfficeIMO.PowerPoint.Pdf`	Editable, visual, hybrid, and tables-only projections with warnings
PDF to HTML	`OfficeIMO.Html.Pdf`	Semantic or positioned-review HTML with extraction and fidelity diagnostics

For HTML, Markdown, RTF, OpenDocument, Google Docs, Sheets, and Slides, use the focused adapter shown in the package catalog. This keeps dependencies and deployment behavior explicit.

One CLI binary for modern Office-to-PDF routes

Install OfficeIMO.Tool once and use the same officeimo executable for DOCX, XLSX, PPTX, and PUB input:

officeimo convert report.docx
officeimo convert workbook.xlsx --output published/workbook.pdf
officeimo convert deck.pptx --output deck.pdf --force
officeimo convert brochure.pub brochure.pdf

The extension selects the same first-party Word, Excel, PowerPoint, or Publisher PDF adapter used by .NET applications. The source is opened read-only, diagnostics go to standard error, and an existing destination is not replaced unless --force is explicit. The command is intentionally a thin package dispatcher; format-specific fidelity and warning contracts remain in the owning adapters linked above.

PowerShell routes are documented separately

PSWriteOffice includes dedicated DOC/DOCX and XLS/XLSX conversion cmdlets and supports Publisher to PDF through Convert-OfficeDocument. Start with the PSWriteOffice product page, then verify the exact command and parameters in the PowerShell API reference.

Conversion is a policy decision

A document can be readable even when every source feature is not editable in the destination. OfficeIMO distinguishes:

Native content represented directly by the destination format.
Editable approximation when the closest destination feature is still useful.
Visual fallback when appearance matters more than editability.
Preserved source when recovery is safer than pretending a conversion was complete.
Blocked output when continuing would silently misrepresent the result.

The format compatibility page exposes those states from the same contracts used by the libraries. For governed migrations, analyze first, decide which states your workflow accepts, then write the output.

Browser, server, and desktop choices

The browser playground handles selected conversions on your device, including the Publisher to PDF browser converter. Legacy DOC, XLS, and PPT migration uses the local packages or command-line tools described in the route guides.

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