Merge PDF

Combine multiple PDF files into a single document. Files are merged in the order they are selected.

upload_file

Drop your PDF files to merge

Files are processed entirely in your browser. Nothing is uploaded to any server.

lockFiles are processed locally in your browser.

About the Merge PDF tool

Combine several PDF files into a single document — contracts with annexes, chapters of a report, or scanned pages that arrived as separate files.

The files are stitched together by your browser using the open-source pdf-lib library. Your documents are never uploaded.

Frequently asked questions

In what order are the files merged?expand_more

Files are merged in the order you select them in the file picker.

How many PDFs can I merge?expand_more

There is no fixed limit — merging is only constrained by your device’s memory.

Can I merge password-protected PDFs?expand_more

No — encrypted files cannot be read. Remove the password protection first, then merge.