Merge PDF
Combine multiple PDF files into one document.
Runs in your browser — your data never leaves your device
Frequently Asked Questions
How do I merge PDF files into one?
Add two or more PDFs, arrange them in the order you want with the arrow buttons, and click Merge. The combined PDF downloads immediately.
Can I merge only some pages from each PDF?
Yes. Enter a page range next to any file, such as 1-3, 5 or 10-, and only those pages are included. Leave it empty to include every page.
Are my PDFs uploaded to a server?
No. Merging happens entirely in your browser with the pdf-lib library, so your documents never leave your device.
Is there a file size or file count limit?
Each PDF can be up to 200MB, and there is no fixed limit on how many files you merge. Very large jobs are limited only by your device memory.
Can I merge password-protected PDFs?
Not directly. Encrypted PDFs must have their password removed first, because their contents cannot be read without it.