PDF Document Merger
Merge PDF files right in your browser. Complete privacy — no file ever leaves your computer.
Feedback
Found a bug or have a suggestion? Let us know!
Features
Complete Privacy
All files are processed locally in your browser. Nothing is sent to a server.
No Limits
No file count, page or size limits. No watermarks.
No Registration
No account, email or subscription needed. Install and use.
Drag & Drop
Drag PDF files directly onto the page or select via file dialog.
Page Editing
Rotate, delete, reorder individual pages. Thumbnail previews.
Workspaces
Multiple independent workspaces for parallel work.
How to Use
Drag & Drop
Drag PDF files into the extension window and click «Merge & Download».
File Picker
Click the upload area, select files from your system.
Context Menu
Right-click a PDF link → «Add to PDF Merger» → choose workspace.
Auto-detection
When you open a PDF in the browser, the extension offers to add it to a workspace.
Comparison
| Feature | PDF Document Merger | Online Services |
|---|---|---|
| Privacy | Files stay in browser | Uploaded to server |
| Works offline | Yes | No |
| File limit | None | 1-2 files |
| Size limit | None | 25-100 MB |
| Watermarks | None | Often present |
| Registration | Not needed | Required |
All Features
Export
Customizable filename template with variables: date, time, count, first.
Undo & Redo
Full action history — up to 50 undo and redo steps.
Preview
Thumbnail grid of all pages with zoom-in capability.
Works Offline
The extension works without internet after installation.
Privacy
- All files are processed locally in the browser
- The extension makes zero network requests
- No analytics, trackers or ads
- Works fully offline after installation