Why Upload When You Can Merge Locally?
Traditional PDF merging services require uploading all your documents to their servers - exposing your sensitive information.
- Multiple files uploaded means multiple exposure points
- Document contents may be indexed or analyzed
- No control over how long files are retained
- Risk of mixing up documents with other users
- Internet required for every merge operation
Merge in Your Browser, Keep Your Privacy
Our PDF merger uses pdf-lib.js to combine documents entirely in your browser. No servers involved.
- All processing happens locally in your browser
- Merge unlimited PDFs in a single session
- Drag and drop to reorder pages
- Works offline after page loads
- No file size exposure to third parties
Privacy Comparison
| Feature | Online Mergers | LocalForge |
|---|---|---|
| File Transfer | All files uploaded to server | Files stay on your device |
| Processing Location | Remote server | Your browser |
| Document Privacy | Trust the service | Guaranteed - verifiable |
| Offline Support | Not available | Full functionality |
| Speed | Depends on upload/download | Instant local processing |
How Local PDF Merging Works
Add Your PDFs
Drop multiple PDF files into the browser. They are loaded into local memory.
Arrange Order
Drag and drop to arrange the order of your documents as needed.
Merge & Download
Click merge to combine all PDFs locally, then download your combined document.
Common Questions
How many PDFs can I merge at once?
There is no limit on the number of PDFs you can merge. The only limitation is your browser's available memory.
Can I rearrange pages from different PDFs?
Yes. After adding your PDFs, you can reorder them by dragging and dropping. The final merged PDF will follow your custom order.
What happens to my original files?
Your original files remain completely unchanged. We create a new merged PDF without modifying your source documents.
Is there a file size limit?
Free users can merge PDFs up to 10MB each. Pro users can handle files up to 100MB each.