Merge PDF — Free Online Tool

Drop PDF files here or click to upload

Select 2 or more PDFs · Drag to reorder · Max 50MB total

How to Use Merge PDF

Upload PDFs
Drag and drop or select 2 or more PDF files from your device.
Reorder pages
Drag files in the list to control the merge order.
Click Merge
Hit "Merge PDFs" — combination happens instantly in your browser.
Download
Download your merged PDF file. No server upload, totally private.

Is there a limit on file size?

Recommended max is 50MB total across all files. Larger files may slow down your browser since processing is local.

Are my PDFs uploaded anywhere?

No. All merging happens locally in your browser using pdf-lib. Files never leave your device.

Can I merge password-protected PDFs?

No, encrypted PDFs must be unlocked first. Use our Protect PDF tool to remove passwords from your own files.

Will the merged PDF preserve quality?

Yes. Pages are copied exactly as-is, with no recompression or quality loss.