Merge PDF
Combine several PDFs into one file, free and in your browser. No upload, no watermark, no sign-up — your files never leave your device.
Drop PDFs here, or click to choose
Merged on your device · nothing is uploaded
your files never leave your browser
How to merge PDF files
Drop two or more PDFs onto the box above (or click to choose them). Reorder them with the up and down arrows until the sequence is right, then click Merge. A single combined PDF is built in your browser and a Download button appears — no upload, no queue, no sign-up.
Why merge PDFs in the browser?
Online merge tools usually upload your documents to a server, which is slow and a privacy risk for contracts, invoices, or scans. Doing it locally is instant and keeps every page on your own device, so sensitive files are never exposed.
Questions
Are my PDFs uploaded to a server?
No. The merge runs entirely in your browser using pdf-lib, so your files never leave your device. That makes it instant and completely private — nothing is sent or stored anywhere.
Can I choose the order of the files?
Yes. After adding your PDFs you can move each one up or down in the list. The combined document follows that order exactly, so you control how the pages are stitched together.