PDF Merger

Combine PDF documents in your chosen order, with original page sizes preserved.

Processed on this page. No uploads. Your input is not saved.

How does PDF merging work?

Add at least two PDFs, move documents up or down, then merge. Pages keep their original size and rotation. Download and check the result before sharing. Your original files stay unchanged, and files never upload to a server.

Which PDFs are supported?

Use ordinary, unlocked PDFs. Damaged files, password protection and interactive forms are not supported. Export a flattened copy of a form first. This tool does not preserve document bookmarks, attachments, signatures or original metadata. Links between pages may not work after merging.

What if processing is slow?

The limit is 20 files, 50 MB and 300 pages combined. Large or complex PDFs can still exceed your device memory. Cancel at any time and try fewer documents. Processing stops after two minutes. This tool does not scan PDFs for malicious content.