Merge PDF
Combine multiple PDF files into a single document — right in your browser. Drag to reorder, merge in one click. Files never leave your device, no watermarks, no limits.
Runs locally in your browser
Drop PDF files here, or click to choose
Multiple files supported — merge at least 2
Files you add will appear here; use ↑ ↓ to set the merge order.
How to use Merge PDF
- Add two or more PDF files from your device.
- Drag to reorder them into the final sequence.
- Click "Merge & download" to get one combined PDF.
Common use cases
- Combine scanned documents into a single file for submission.
- Merge invoices or receipts into one monthly archive.
- Attach a cover page before an existing report.
- Bundle chapter exports into a complete manuscript.
Good to know
- Files are combined whole, in the order you set; page-level mixing is not supported.
- Password-protected PDFs need to be unlocked first.
- Very large files take a moment because everything runs locally.
Guides
What you can do next
FAQ
Are my PDFs uploaded anywhere?
No. Merging uses pdf-lib running entirely in your browser. Your documents never leave your device — confidential contracts and statements stay private.
Is there a file size or page limit?
No hard limit — everything depends on your device's memory. Hundreds of pages per file work fine on a modern computer.
Need only some pages instead?
Use the companion Split PDF tool to extract a page range like 1-3,5 into a new file.