# pdf2md.pro — Full Reference

> pdf2md.pro is a free, privacy-first online tool that converts PDF documents to clean, well-structured Markdown. Built with Next.js and TypeScript, deployed on Dokploy with Nixpacks. All processing happens client-side using PDF.js — your files never leave your browser.

## How It Works

pdf2md.pro processes PDF files entirely in your browser using PDF.js, the same library that powers Firefox's built-in PDF viewer. When you upload a PDF:

1. PDF.js parses the document structure and extracts text content with positioning metadata.
2. Font sizes are analyzed relative to body text to detect headings (h1-h3).
3. Text styling metadata identifies bold, italic, and linked content.
4. List patterns are recognized from indentation and bullet/number prefixes.
5. The structured content is converted to clean Markdown syntax.
6. A live preview is rendered so you can verify the output before downloading.

No server is involved at any step. Your files are never uploaded, stored, or transmitted.

## Key Specifications

- **Maximum file size:** 100 MB per file
- **Maximum batch size:** 50 files at once
- **Conversion speed:** A 10-page PDF converts in under 3 seconds (device-dependent)
- **Output format:** Standard Markdown (.md files)
- **Download options:** Individual .md files or a single ZIP archive
- **Browser support:** Chrome, Firefox, Safari, Edge (latest versions)
- **Offline support:** Works without internet after initial page load
- **Chrome extension:** Available on the Chrome Web Store as "pdf2mdpro — PDF to Markdown" (ID: kbckmdadhdcjkphgpinkfkbpbeddpnem). Provides a browser side-panel for converting PDFs without leaving the current tab. Same client-side, privacy-first processing as the web app.

## Supported Markdown Elements

- Headings (h1–h3) detected by font-size analysis
- Paragraphs with proper spacing
- Bold and italic text from font metadata
- Bullet and numbered lists
- Links from PDF annotations
- Page breaks preserved as horizontal rules
- Best-effort table conversion via text positioning analysis

## Known Limitations

- Scanned PDFs (images of text) are not supported — no OCR capability
- Complex multi-column table layouts may lose structure
- Embedded images are not extracted
- Mathematical formulas may lose formatting
- Right-to-left text is not fully supported

## Frequently Asked Questions

**Is pdf2md.pro really free?**
Yes, completely free with no hidden limits. There are no premium tiers, no sign-ups, and no ads. Convert as many PDFs as you want.

**Are my files uploaded to a server?**
No. Your files are processed entirely in your browser using PDF.js. Nothing is uploaded to any server. Your documents never leave your device.

**What is the maximum file size?**
Each file can be up to 100MB. You can convert up to 50 files at once. For very large files, processing time depends on your device's performance.

**Does it work with scanned PDFs?**
No, pdf2md.pro works with text-based PDFs only. Scanned PDFs (images of text) require OCR, which is not currently supported. We recommend using a dedicated OCR tool first.

**What Markdown elements are supported?**
Headings (h1-h3), paragraphs, bold text, italic text, bullet lists, numbered lists, links, and page breaks. Headings are detected by analyzing font sizes relative to body text.

**Can I convert multiple PDFs at once?**
Yes! You can drag and drop up to 50 PDF files at once. Each file is converted independently, and you can download them individually or as a ZIP archive.

**Does it work offline?**
Yes. After the page loads initially, the converter works without an internet connection. This makes it ideal for working with sensitive or confidential documents.

**What browsers are supported?**
pdf2md.pro works in all modern browsers: Chrome, Firefox, Safari, and Edge. We recommend using the latest version of your preferred browser for the best experience.

**Are tables converted to Markdown?**
We attempt best-effort table conversion by analyzing text positioning. Simple tables usually convert well, but complex multi-column layouts may lose their structure.

**Can I use this for commercial purposes?**
Yes. There are no restrictions on how you use the converted Markdown output. Use it for personal, educational, or commercial projects.

## Technology Stack

- **Framework:** Next.js (App Router) with TypeScript
- **PDF parsing:** PDF.js (Mozilla)
- **Styling:** Tailwind CSS
- **Deployment:** Dokploy via Nixpacks
- **Processing:** 100% client-side JavaScript