Merge PDF Files Online
Merge PDF documents into one file for free, with no sign up. Everything runs in your browser and nothing is uploaded.
Choose two or more PDFs. You can add more files before merging. All pages from each file appear in the order below.
Made with pdf-lib by Andrew Dillon, MIT license. License text.
How to use this tool
Choose files to merge PDFs, arrange them with the move buttons, then save the combined file.
Frequently asked questions
Do my files leave my device?
No. Each file never leaves the device. PDFs are read and merged entirely in your browser, with nothing uploaded.
Can I merge PDF files in a different order?
Yes. To merge PDFs in your chosen order, use Move up and Move down. Remove leaves a file out. All pages from each remaining file appear in that order.
Can I merge encrypted or broken PDFs?
No. Encrypted PDFs, including password-protected files, are rejected with a clear error. A damaged PDF may also be unreadable. Remove that file or choose an unencrypted, working copy.
Are forms and bookmarks preserved?
This tool copies pages. Interactive forms, document bookmarks and digital signatures may not be preserved. Very large files can exceed your device’s available memory.