Merge PDFs
Drop in as many PDFs as you like and they are appended in the order you add them. Drag the thumbnails to rearrange pages across the whole combined document before you save.
How to do it
- Open the first PDF, then drop the others on top of it.
- Drag thumbnails in the sidebar to reorder pages across all the files.
- Delete or rotate anything you do not want to keep.
- Download the combined document.
Why nothing is uploaded
Most online PDF tools work by sending your file to a server, editing it there, and sending it back. That means contracts, medical records, bank statements and passports all end up on someone else's machine, and you are trusting a privacy policy about what happens next.
This editor does the work in your browser instead. The PDF is read by this tab, rendered with pdf.js and written back out with pdf-lib, both running as ordinary JavaScript on your own device. There is no upload endpoint, because there is no server doing any of this. Once the page has loaded you can disconnect from the network entirely and everything still works.
Questions
- Is my file uploaded?
- No. Everything happens in this browser tab, on your own device. There is no upload endpoint and no server-side processing, so the file never leaves your machine — you can disconnect from the network after the page loads and it still works.
- How many files can I combine?
- There is no fixed limit. The practical ceiling is your device memory, since every open document is held in the tab.
- Can I reorder pages while merging?
- Yes. Once files are open, all their pages appear in one thumbnail rail and can be dragged into any order, regardless of which file they came from.
Related tools
- Split a PDF — Split a PDF into several files, or pull out a range of pages, entirely in your browser. No upload and no account.
- Rotate PDF pages — Rotate one page or the whole document and save the result permanently. Runs in your browser with no upload.
- Delete pages from a PDF — Remove unwanted pages from a PDF and save the rest. Runs entirely in your browser with no upload.
- The full editor — annotate, sign, fill forms, redact, OCR and more.
Part of messy-ui. Free, open source and account-free — see also the countdown timer.