Editor
This tool needs JavaScript because it processes the PDF in your browser rather than on a server. The instructions and FAQ below are readable as they are.
Pick several PDFs and turn them into one file. They are joined in the order you added them, and from there you can move whole files earlier or later, or move individual pages wherever you want them.
Useful for putting a scanned cover together with a body document, or for collapsing a contract that arrived as separate files.
How to use it
- Use “Choose PDF files” to pick the files. You can select several at once, or add more later with “Add more files”.
- In the loaded-files list, use ▲ ▼ to change the file order. The pages belonging to a file move with it.
- Check the page thumbnails. If a single page needs moving, use the ‹ › buttons on the page card or Ctrl+←/→.
- Press “Download the new PDF”. The originals are untouched and the merged result is saved under a new name.
Examples
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A 1-page cover plus a 12-page body
Selecting both gives a 13-page document. If the cover ended up last, move it up with ▲ in the file list.
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Three files in date order rather than the order they arrived
Add all three, then use ▲ ▼ in the file list to put them in date order. No page-by-page dragging needed.
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Only the last page of one file needs to go first
Click that page card to focus it and press Ctrl+Home to send it to the front of the whole document.
Questions
How many files can I merge?
This screen accepts up to 20 files, 25 MiB per file, 50 MiB in total and 200 pages in total. Anything over the limit is refused per file, and files already loaded stay loaded. Being under the limit is not a promise that a particular file always succeeds.
Can I mix page sizes?
Yes. Mixing A4 and Letter, portrait and landscape, keeps each page at its original size and orientation. Nothing is stretched to a common size.
Can I merge a password-protected PDF?
No. A protected PDF is not opened, and the message names the file that caused it. Files already loaded remain.
Are bookmarks and form fields preserved?
Not guaranteed. Merging copies page content into a new document, so bookmarks, form values and digital signatures can be lost. Keep your own copy of the original.