PDF Tools
Merge PDFs
Upload multiple PDFs, drag them into the order you want, and download them as a single combined file. Your files never leave your device.
PDF files
Files
Your files never leave your device.
Powered by pdf-lib (MIT).
How it works
- 1
Upload two or more PDF files using the drop zone or drag & drop.
- 2
Drag the file rows to set the order they should appear in the final document.
- 3
Click "Merge & Download" — the combined PDF is saved instantly to your device.
Frequently asked questions
Is this tool free to use? ▾
Yes, completely free with no limits and no sign-up required.
Do my files get sent to a server? ▾
No. All merging happens in your browser using pdf-lib. Your files never leave your device.
Is there a file size or page limit? ▾
There is no hard limit. Very large files may take a moment to process depending on your device.
Can I merge more than two PDFs? ▾
Yes — add as many files as you like using the "+ Add more" button after the initial upload.
Do password-protected PDFs work? ▾
No, password-protected files are not supported. Remove the password first using a local PDF application, then merge here.