Generate a report or invoice
Build Word and PDF output from application data or an approved template.
Check placeholder completeness and the output's layout before delivery.
OfficeIMO · Open-source document tools
Create. Convert.
Make documents work.
Generate reports, organize PDFs, and extract content with open-source document tools.
Use .NET, PowerShell, the CLI, or your browser—without Microsoft Office.
Meet OfficeIMO Studio
Keep your document
at the center.
Follow a comment, find the right passage, or put pages in order. Studio brings document tools into one desktop workspace.
Explore the workspaceDesktop source build · Public downloads in preparation
Studio
Read, review, and organize documents in a visual workspace.
Explore Studio → Command lineCLI
Convert, extract, and inspect files from scripts and terminal commands.
Meet OfficeIMO.Tool → .NET & PowerShellLibraries
Build document workflows into your applications and automation.
Find your library →Start with the document job
Convert Office files to PDF
Turn a Word document, workbook, or presentation into a downloadable PDF.
Fonts and unsupported layout features can change the result; read the conversion diagnostics.
Merge, split, or reorder PDFs
Select pages and produce a separate document while retaining the source.
Protected, signed, or unsupported inputs can restrict rewriting. Each tool reports its limits.
Extract content for search and AI
Read text, tables, and source locations across document formats.
Scans need an optional OCR provider. Extracted text is not proof of original reading order.
Automate spreadsheet reporting
Export objects and database results to Excel or CSV in repeatable scripts.
Use the module's documented runtime and provider requirements for your chosen data source.
Review and edit a PDF visually
Keep the document in view while working with comments, forms, pages, and supported content.
Studio currently requires a source build. Public installers and native printer submission are not available.
Made with OfficeIMO
See it in action.
Try a document tool, explore real output, or start from a working example.
Try the browser converter Work with your files directly in the browser. Explore generated documents Download the output and inspect its source. Start with code Use a C# or PowerShell example in your project.
Project charter
Create an editable Word project charter in C# with scope, milestone owners, acceptance evidence, and a PDF copy for review and handover.
Budget scenario comparison
Compare budget scenarios in Excel with C# formulas, editable assumptions, and calculated contribution. Download the workbook, preview, and source.
An editable project roadmap deck
Create a PowerPoint roadmap in C# with editable phase cards and a decision-checkpoint table. Preview the slides and download the PPTX and PDF.
A two-page workshop pack
Build a two-page PDF workshop pack in C# with an agenda, exercise sheet, running header, and page numbers. Preview both pages and download the PDF.
Frequently Asked Questions
Does OfficeIMO require Microsoft Office to be installed?
No. OfficeIMO uses managed document engines and focused package dependencies; it does not require Microsoft Office, COM automation, or Office interop assemblies at runtime. Optional desktop Office checks are validation oracles, not runtime dependencies.
Does OfficeIMO support DOC, XLS, XLSB, and PPT as well as DOCX, XLSX, and PPTX?
OfficeIMO classifies and reads modern and legacy Word, Excel, and PowerPoint families, writes documented native subsets, and reports conversion coverage by operation and fidelity. Use the compatibility dashboard for tracked behaviors, fallbacks, and deliberate blocks.
What .NET versions are supported?
OfficeIMO targets .NET 8.0, .NET 10.0, .NET Standard 2.0, and .NET Framework 4.7.2.
Is OfficeIMO free for commercial use?
Yes. The OfficeIMO packages themselves are published under the MIT License. However, some optional package families build on third-party dependencies with their own upstream terms, so commercial teams should also review our Third-Party Dependencies page during OSS approval.
How does OfficeIMO compare to Aspose or GemBox?
OfficeIMO is an MIT-licensed, source-available document platform for .NET and PowerShell with modern and legacy Office support, focused packages, explicit conversion-fidelity policies, and no runtime royalty. Commercial suites can provide broader portfolio coverage, more mature rendering for some workloads, formal support, and procurement SLAs. Compare the exact formats, operations, fidelity, deployment model, and support obligations your application needs on our evaluation page.