Combine multiple PDF files into one — right in your browser. Unlike other free tools, there are no daily limits and your files are never uploaded to any server.
Merging happens entirely on your device using the open-source pdf-lib engine loaded in your browser. Nothing is sent anywhere. Works on phone and desktop.
Part of the PDF Tools collection — browse all related free tools.
Most free PDF mergers upload your files to their servers. This tool does the opposite: the merge runs inside your browser, so sensitive documents — IDs, contracts, payslips — never touch the internet beyond loading this page.
Choose 2 or more PDFs above, arrange them in order with the ↑ ↓ buttons, then click "Merge PDFs". The combined file downloads instantly.
No. Merging happens in your browser on your device. Files never leave your phone or computer.
No daily limits. Merge as many files as you like, as often as you like.
Yes — 100% free, no signup, no watermark.
There is no hard count limit, but your browser's memory is the practical ceiling — merging many huge scanned PDFs on an old phone can slow down or fail. For very large jobs, merge in smaller batches.
No. Pages are copied into the new document, not re-rendered, so text stays sharp and images keep their original resolution. Merging is a lossless operation for page content.
Not within the merged file using this tool — the page order is fixed at merge time. Arrange your files (and their internal page order) before you click merge, and re-merge if you change your mind.