Merge PDF Files
Combine several PDFs into one document in the order you choose — without uploading them anywhere.
🔒 Private: runs in your browser, no upload
How to merge PDF files
- Choose or drop two or more PDF files.
- Use the ↑ ↓ buttons to put them in the right order, or ✕ to remove one.
- Click Merge PDFs and download merged.pdf.
About merging PDFs
Pages are copied, not re-rendered, using the open-source pdf-lib library — so text stays selectable, links and vector graphics stay sharp, and quality is identical to the originals.
Frequently asked questions
Is there a limit on files or size?
There is no fixed limit. Very large PDFs (hundreds of MB) depend on your device's memory.
Are my PDFs uploaded?
No. Merging happens in your browser with pdf-lib; files never leave your device.
Is quality reduced?
No. Pages are copied as-is, so text, images and vectors are unchanged.
Can I merge password-protected PDFs?
Encrypted PDFs must be unlocked first; otherwise you'll see an error message.
Can I merge images into a PDF?
Yes — use JPG to PDF or PNG to PDF, then merge the result with other PDFs here.