Choose the right workflow
Where legacy Office conversion creates value
The API is most useful when an application or migration pipeline has valid Office 97-2003 files but downstream systems work more consistently with modern OOXML packages.
Word
DOC to DOCX API
Modernize contracts, policies, reports, correspondence, and knowledge archives before parsing or migration.
PowerPointPPT to PPTX API
Normalize historical presentations before slide extraction, search, review, or content migration.
ExcelXLS to XLSX API
Upgrade legacy workbooks before worksheet parsing, analytics preparation, and data-quality review.
AI pipelineAI and RAG preprocessing
Use conversion as the normalization stage before document parsing, chunking, embedding, and indexing.
Common organizational scenarios
| Scenario | Buyer | Role of the API | Next step |
|---|---|---|---|
| Archive modernization | Records and information-management teams | Normalize a legacy collection while retaining an editable Office result | Validate, classify, and store in the destination archive |
| Cloud or DMS migration | Migration engineers and MSPs | Standardize source files before import | Upload through the customer's migration connector |
| SaaS upload compatibility | Application developers | Accept old Office files without running Microsoft Office on the server | Preview, extract, analyze, or store the modern result |
| AI knowledge preparation | Data and AI engineers | Remove a legacy binary-format dependency | Parse to text, Markdown, HTML, JSON, or structured rows |
When not to use this API
- You need OCR for scans or image-only documents.
- You need the service to extract text, create chunks, calculate embeddings, or manage a vector database.
- You need guaranteed pixel-perfect layout or macro execution.
- You need direct SharePoint, OneDrive, Google Drive, or DMS connectivity.
- The source file exceeds 4 MiB or is encrypted, corrupted, or not an OLE/CFB Office file.