Merge PDF
Combine multiple PDFs into one — privately.
Drop PDFs here
or click to choose files · they never leave your browser
Free PDF merger. Combine multiple PDF files into a single document, reorder them before merging, and download the result. Everything happens in your browser — your files are never uploaded to a server.
How to use the Merge PDF
- 01Drop your PDF files in, or click to choose them.
- 02Drag with the arrows to set the order.
- 03Click Merge — the combined PDF downloads instantly.
Frequently asked questions
Are my PDFs uploaded anywhere?
No. Merging is done entirely in your browser with the pdf-lib library, so your documents never leave your device. That makes it safe for confidential files.
Is there a file size or count limit?
There's no fixed limit. Because processing is local, very large files are only bounded by your device's available memory.