PDF Editor — Free Open Source PDF Editor

A free, open-source PDF editor that runs entirely in your browser. No server uploads, no accounts, no tracking. Your files never leave your device.

Features

PDF Editing

• Text annotations — add text with custom font size and color
• Freehand drawing — draw directly on PDF pages
• Highlight — mark important sections
• Shapes — add rectangles for emphasis
• Redact — black out sensitive content
• Image insertion — place images onto PDF pages
• Signature — draw and insert signatures
• Undo/Redo — full edit history

Page Management

• Page thumbnails sidebar
• Rotate pages (90° increments)
• Delete pages
• Navigate and zoom (mouse wheel + Ctrl supported)

Standalone Tools

• Merge PDFs — combine multiple PDF files into one
• Split PDF — extract individual pages or page ranges
• Compress PDF — reduce file size
• PDF to Image — export pages as PNG or JPEG

Privacy & Security

• 100% client-side processing — files are never uploaded to any server
• No accounts, no cookies, no tracking
• All data lives in browser memory and is cleared on page close/refresh
• Only your theme preference (dark/light) is stored in localStorage

Getting Started

Option 1: Open directly

Simply open pdf-editor-pro.html in any modern browser. No build step or server required.

Option 2: Local server

python3 -m http.server 8080
# Open http://localhost:8080/pdf-editor-pro.html

Option 3: Deploy to GitHub Pages

Push to a GitHub repository and enable GitHub Pages — it works out of the box as a single HTML file.

Keyboard Shortcuts

Shortcut	Action
V	Select tool
T	Text tool
D	Draw tool
H	Highlight tool
S	Shape tool
R	Redact tool
I	Insert image
Ctrl+Z	Undo
Ctrl+Shift+Z	Redo
Ctrl+S	Download edited PDF
Ctrl+O	Open PDF file
+ / -	Zoom in / out
Ctrl+Scroll	Zoom with mouse wheel
Delete	Delete selected annotation
Escape	Deselect / close modal

Tech Stack

• PDF.js — PDF rendering
• pdf-lib — PDF modification and creation
• Vanilla HTML, CSS, JavaScript — no build tools, no frameworks

Contributors

• Kashif — Creator & Maintainer

License

MIT License — see LICENSE for details.

This software is provided "as is", without warranty of any kind. The author is not liable for any claims, damages, or other liability arising from the use of this software.