Y yuantoolsProcessed on your deviceAccount

DOCUMENTS, READY FOR YOUR NEXT STEP

Less formatting.
More useful documents.

Turn PDFs and scanned images into editable Markdown and structured chunks for knowledge bases and AI workflows. Your files stay in your browser.

YUAN TOOLS
01 / DOCUMENTSFree · No account needed
01

PDF to Markdown

Convert text PDFs and scanned pages into editable Markdown.

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Image OCR

Extract text from images and pasted screenshots.

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HTML to Markdown

Turn HTML source into clean Markdown.

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JSON formatter

Validate, format and download readable JSON.

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PDF Split & Merge

Extract selected PDF pages or merge PDFs in your chosen order. Local processing, no upload.

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Batch Image Compressor & Converter

Resize and convert PNG, JPEG and WebP images in batches, with before-and-after file sizes.

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Markdown to HTML & Print PDF

Turn Markdown into clean HTML, preview it and use your browser to print or save as PDF.

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Free · No account needed · 10 successful conversions and 30 OCR pages per device daily.

01 No file uploads02 No signup wall03 Editable output04 No usage tracking in this version

A SMALLER STEP BETWEEN FORMATS

From a file to a working draft.

Markdown is plain text with lightweight formatting. It fits naturally into Obsidian, GitHub documentation and many AI knowledge workflows.

  1. Choose a PDF or image

    Selectable text converts quickly. For scans, select the recognition language and keep the OCR option enabled.

  2. Convert and review

    Check headings, reading order and line breaks. Edit the source directly or switch to a rendered preview.

  3. Take it with you

    Download Markdown with optional metadata, or a JSON file containing overlapping chunks for your ingestion pipeline. Always review before adding it to a knowledge base.

BUILDING TOWARD BETTER DOCUMENTS

Documents for AI workflows.

Local OCR and knowledge-base exports are available free. A metered developer API and Airwallex credit purchases are in preparation; checkout is not yet enabled.

Developer API & availability →

PRIVACY & LIMITATIONS

Your files stay with you.

Conversion runs on your device. This version does not send document contents to a server, save conversion history or use advertising cookies. OCR language models may be cached on your device; document content is not cached by this app. Exported metadata can include the source filename. The hosting service receives normal page requests. Closing or refreshing this page clears your work. Your language preference is saved on this device. Google sign-in uses secure session cookies. Your Google account identifier, basic profile, credit balance and purchase records are stored on our server. Paid API requests send submitted text to our server for processing; the free browser tools remain local.

This is a free utility, provided without a guarantee of perfect conversion. Do not rely on it as the only copy of your documents.