PDF Merger
Combine multiple PDFs into one file, in order.
Runs 100% in your browser — nothing is uploaded
Merge several PDFs into a single document in your browser. Add your files, drag them into the exact order you want, and download one combined PDF — perfect for bundling contracts, chapters, or scanned pages. Files are processed locally and never uploaded.
Frequently asked questions
Is my data uploaded to merge it?
No. Merging happens entirely in your browser with pdf-lib. None of your PDFs are sent to a server.
Can I control the page order?
Yes. Drag the files into any order before merging, and the pages are combined exactly as arranged.
Is there a file limit?
There's no hard limit, but very large documents use more memory since everything runs on your device.
Is the combined file still a normal PDF?
Yes — you get a single standard PDF that opens in any reader. Run it through the PDF Compressor if you need it smaller.
Related tools
Handy companions people often use alongside PDF Merger.