Merge PDF files
Drop in as many PDFs as you like, drag them into the right order and download a single merged file. The files are opened by your own browser — nothing is sent to a server.
- Runs entirely in your browser
- Works offline
- No upload
- No sign-up
- No watermark
Loading the tool…
How it works
- Drop your PDF files onto the area below (or pick them with the button).
- Drag the cards to set the order. Remove any file you added by mistake.
- Press “Merge” and the combined PDF downloads straight from your browser.
Why nothing is uploaded
Every operation on this page is done by code running inside your browser tab, using the same engine that renders web pages. The file is read from disk into your tab’s memory, transformed there, and written back out as a download. It is never sent anywhere — not to us, not to a third party.
Verify it yourself
- Open your browser’s developer tools (F12) and select the Network tab.
- Load your file and run the tool.
- The only requests you will see are the tool’s own code and, once cached, none at all.
Frequently asked questions
Is there a limit on the number or size of the files?
No artificial limit. The only ceiling is your own device’s memory, because the merge happens there. Hundreds of pages are routine on a normal laptop.
Do you keep a copy of my documents?
We cannot: your files never reach us. They are read from disk into the browser tab, merged in memory and written back out as a download. Load the page, switch off your connection and it still works.
Are bookmarks, form fields and links preserved?
Page content, links and most annotations are copied as-is. Document-level structures such as the bookmark tree and AcroForm fields are not carried over — that is a limitation of copying pages between documents, and we would rather say so than pretend otherwise.