PDF + PDF → PDF
Merge PDF
Drop two or more PDFs and get one document back — in exactly the order you set. The pages are copied on your device; nothing is uploaded.
Use the arrow buttons on each file to set the order — the list is joined top to bottom. Bookmarks and form data are not carried into the merged file.
At a glance
- Price
- Free
- Account
- None needed
- Upload
- None — the documents are read and rewritten in your browser tab, nothing is sent to a server
- Input
- PDF, up to 20 files per run
- Output
- One PDF, in the order you set
- File size
- 200 MB per file
- Works on
- Any modern browser — Android, iPhone, Windows, macOS, Linux
How to merge PDFs
Add the PDFs
Drop up to twenty documents on the box above, or pick them from your disk. Each one appears with its page count and size.
Set the order
Move files with the ↑ and ↓ buttons until the list reads the way the merged document should. The first file's pages come first.
Download the merge
Press Merge the PDFs and download the result — a single file, every page kept at its original size and resolution.
What merging does — and what it does not
Merging copies the pages of every input document into one new file. Nothing is re-rendered or re-compressed: each page arrives exactly as it was, at its own size, so a mixed-orientation pile keeps every page right way up and print-ready. The result opens in every viewer and prints like the parts did.
Two things deliberately do not survive the merge: interactive form fields (the values remain drawn on the page, but the fields stop being fillable) and bookmarks. If either matters, keep the original files — the merged copy is a new file and the originals are untouched.
Merge PDF questions
Is my file uploaded anywhere?
No. Every page is read and rewritten in this browser tab; the files never touch a server, which also means the tool keeps working offline once the page has loaded.
How many PDFs can I merge at once?
Twenty files per run, up to 200 MB each. If you need more, merge the first batch, then add the result to the next batch — the output is a normal PDF that can be an input again.
Does merging change the page quality?
No. Pages are copied rather than rendered: text stays selectable, images keep their original resolution, and file sizes add up roughly as you would expect.
Can I put one PDF in the middle of another?
Not in this tool — the merge is sequential and file-level. For page-level ordering, split the document you want to insert into first, then merge the three pieces in the right order.
What happens to password-protected PDFs?
A locked file is refused with a clear message. Remove the password in a reader first, then merge the unlocked copy.