Merge PDF Files Online
Combine several PDF files into one document right in your browser. Set the order, merge instantly — your documents never leave your device.
Your files never leave your device
Frequently asked questions
Is it safe to merge confidential PDFs here?
Yes. Merging happens locally in your browser with the pdf-lib library — files are never sent to any server.
How many PDFs can I merge at once?
Up to 20 files in one go, limited only by your device's memory.
Will the quality of my PDFs change?
No, pages are copied into the new document as-is, without re-compression.