How to Use Merge PDF
Merge several PDFs into a single document, reorder them before combining, and download — all in your browser with nothing uploaded.
Open the Merge PDF tool →What is Merge PDF?
Combine multiple PDF files into one, in any order. It's completely free, needs no sign-up, and runs entirely in your browser — so it's fast and private.
How to use Merge PDF
- Open the Merge PDF tool.
- Select or drop in your PDF file.
- Set the options for what you want to do.
- Download the new PDF. Everything runs in your browser — nothing is uploaded.
Frequently asked questions
Can I set the page order?
Yes — add multiple PDFs and arrange them in the order you want before merging into one file.
Is there a file size limit?
There's no hard limit, but very large files use more memory since everything is processed in your browser.
Are my PDFs uploaded?
No — merging is done locally with pdf-lib; your documents never leave your device.
Ready to try it?
Open Merge PDF →