PDF · runs locally

Merge PDF files

Combine several PDFs into one document — drag the list into the order you want, then merge.

Runs on your device No uploads, ever Free, no account

1
Add your PDFs
Drop two or more PDF files onto the cutting board. They stay in your browser the whole time.
2
Set the order
Drag a row into place, use the arrows, or focus a row and press Alt+— / Alt+—. Page counts appear on each row so you can sanity-check the result.
3
Merge and download
Press Merge. The combined file downloads straight away.

Questions people actually ask

Is there a file size limit?

No hard limit from us. The practical ceiling is your computer's memory — a merge of a few 100 MB files is usually fine on a modern laptop.

What about password-protected PDFs?

Those can't be opened without the password, so they can't be merged. Unlock them first, then merge.

Can I change the order after adding files?

Yes — drag any row, press the arrows, or tab to a row and use Alt+— / Alt+—. The merge always runs top to bottom.