Merge PDFs
Combine multiple PDFs into one, in the order you drop them.
Runs in this tab. The file stays here.
About Merge PDFs
Combine multiple PDFs into one file, in the order you choose.
Merging PDFs is one of the most common “upload this to a random site” jobs. This page loads each document with pdf-lib and copies pages into a single output.
Everything runs in this tab. The PDF never leaves your device for a server to process.
How to use Merge PDFs
- 1Drop two or more PDFs.
- 2Reorder with Up/Down if needed.
- 3Click Merge & download.
Common questions
Does merge re-encode pages?
No. Pages are copied as objects when the library can do that. The content stays vector when it started that way.
Related tools
Why this one doesn't upload your file
There is no server to upload to. This page is a static file, and the work happens in your browser using the same graphics and WebAssembly code that renders every other site you visit. Your file is read from disk into memory, processed, and handed back as a download. Once the page has loaded you can disconnect from the network entirely and it keeps working. The longer explanation