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Merge PDF
Add several PDFs, arrange their order, and merge them into a single document — all in your browser using pdf-lib. Your files are never uploaded.
Examples
Input
report.pdf + appendix.pdf
Output
combined.pdf with all pages
How to use Merge PDF
Add files
Drop in or select two or more PDF files.
Order them
Reorder the list so the pages combine the way you want.
Merge & download
Click Merge to build and download the combined PDF.
Why use this tool
Combine any number of PDFs
Reorder before merging
No upload — runs on your device
No watermark, no sign-up
Frequently asked questions
No. Merging happens entirely in your browser with the pdf-lib library; files never leave your device.
There is no hard limit, but very large documents use more memory since everything runs locally.
Discussion
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