Merge PDF files into one document
Add the PDFs, drag them into the order you want, and combine them in your browser. Nothing is uploaded.
Choose PDFs
Up to 20 files, 100 pages combined, 50.0 MB each
Original page quality is kept
Pages are copied into a new document instead of being printed again, so text, links, and images arrive exactly as they were. Password-protected and corrupt files are rejected with a clear message.
People combining documents: file requirements
- PDF pages are copied without re-rendering.
- Files must meet the documented PDF limits.
- Password-protected PDFs must be unlocked first.
How to prepare the file
- Choose PDFs.
- Arrange their order.
- Merge the documents.
- Download the combined PDF.
Questions about this tool
Does merging reduce quality?
Pages are copied rather than rasterized, so their original content stays intact.
Frequently asked questions
How many PDFs can I merge at once?
Up to 20 files in one run, each up to 50 MB, with a combined total of 100 pages in the finished document. If the result would be larger, remove a file or split it first.
Does merging reduce the quality of the pages?
No. Pages are copied from the source files into a new document rather than printed again, so text, links, fonts, and images arrive exactly as they were.
Can I change the order of the files?
Yes. Drag any file up or down the list before merging, or use the handle with the arrow keys. The order you see is the order of the pages in the result.
Are my documents uploaded?
No. Each file is read and combined on your device with JavaScript. Nothing is sent to a server, and no copy is kept after you close the tab.
What happens to password-protected PDFs?
They are rejected with a clear message. Remove the password in your PDF app first, then merge the unlocked copies.