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.

Yaml Front Matter Source Metadata 0807

Markdown exports now include YAML front matter with source metadata

2026-08-07

Starting 2026-08-07, MarkItDown Online adds a YAML front matter block to every Markdown export. Previously, converted files contained only body content, so downstream pipelines had no reliable way to trace a Markdown file back to its source. Each export now records source metadata at the top of the document.

What the front matter contains

Each export starts with a YAML block between --- markers. It records the original file name, source format (PDF, DOCX, XLSX, PPTX, HTML, image, or audio), page or sheet count where applicable, and the UTC conversion timestamp. Body content starts immediately after the closing --- line, so renderers that ignore front matter display the document unchanged.

Practical impact

Knowledge-base pipelines and agent ingestion flows can now attribute each Markdown file to its source without a separate manifest. When a batch mixes formats, the format field makes filtering trivial. If you post-process exports with custom templates, confirm they preserve the leading block. Feedback: sapsap@qq.com.