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Merge multiple PDF files into one document. Reorder before merging, remove files you do not want. Runs locally in your browser — files stay on your device.
At least 2 files. Up to 50 MB each.
Use ↑ ↓ arrows to move files into your desired order.
Merging runs locally — instant.
All files in one document, same quality as originals.
No hard limit. Browser memory is the practical ceiling — 20-30 PDFs are fine on an average device.
No. pdf-lib copies pages byte-for-byte without re-rendering, so the quality is identical to the originals.
Absolutely. Everything happens in your browser — files never reach our server or anywhere else.