Is MarkItDown Online free to use?

Yes. MarkItDown Online is free to use with an optional Pro plan for advanced features.

What file formats are supported?

MarkItDown Online supports PDF, Word (.docx), Excel (.xlsx), PowerPoint (.pptx), HTML, images (OCR), and audio files.

Is my document data stored?

No. All document processing happens in your browser or via temporary in-memory processing. No uploaded files are stored permanently.

Does MarkItDown Online use Microsoft MarkItDown?

Yes. MarkItDown Online uses the open-source Microsoft MarkItDown library to convert PDF, DOCX, XLSX, PPTX, HTML, images, and audio to Markdown.

Can I convert multiple files at once?

Yes. MarkItDown Online supports batch file conversion. You can upload multiple files and convert them all at once.

Converting Excel Multi Sheet Workbooks To Markdown

Converting Multi-Sheet Excel Workbooks to Structured Markdown

2026-07-31

Multi-sheet Excel workbooks are common in finance and operations, but most conversion tools flatten them into a single stream of tables with no indication of which sheet a table came from. MarkItDown Online now preserves sheet boundaries as H2 headings and includes the sheet name in the heading so downstream readers can trace each table back to its source.

Sheet boundaries as headings

Each sheet in the workbook becomes an H2 heading with the sheet name. Tables within that sheet follow the heading in document order. If a sheet has no data, it is skipped with a comment marker so the absence is explicit rather than silent.

Named ranges and formula context

Named ranges are preserved as inline annotations next to the cells they reference. Formulas are shown in a code block below the table they belong to, so reviewers can see the calculation logic without opening the original workbook. This is especially useful for financial models where the formula is part of the audit trail. Feedback: sapsap@qq.com.