Merge PDF
Combine several PDF files into one, in the order you choose. Mixed page sizes are kept as they are.
Open Merge PDF
This tool processes your file in your browser. Your file is not uploaded.
Up to 25.0 MB and 200 pages per task.
How it works
- Choose two or more PDFs.
- Put them in order with the arrows, or by dragging.
- Select Merge PDFs, then download the new file.
Good to know
- Pages keep their own sizes and orientation, so mixed A4 and Letter files merge as they are.
- Bookmarks, page labels, and accessibility tags from the originals aren’t carried into the merged file, and you’ll be told when that applies.
- PDFs with interactive form fields, embedded attachments, or scripts can’t be merged yet, because their structure would not survive.
- Password-protected PDFs can be unlocked to check them, but they can’t be changed yet — SealionPDF won’t remove or weaken their protection.
- If a PDF has a digital signature, you’ll be warned first: changing the file may invalidate that signature.
Questions
- Is there a limit?
- Up to 25 MB and 200 pages in total per merge, on every supported browser.
- Are my files uploaded?
- No. The files are read and combined by your browser on your device.