Merge PDF
Combine several PDFs into one, in the order you want.
Combine contracts, scans, and chapters into a single PDF in the order you choose. Because merging happens in your browser, there is no upload bar to wait for and no server that ever sees your files — it is fast on a 200-page document and on a slow connection alike.
How it works
- Add two or more PDFs (drag & drop works).
- Reorder them with the arrows until the sequence is right.
- Click Merge and download the combined PDF.
Common questions
Is there a limit on how many PDFs I can merge?
No fixed limit — merge as many files as your device's memory can comfortably handle. There are no per-task caps like cloud tools impose.
Will the merged PDF have a watermark?
Never. Free or Pro, SwiftlyPDF does not stamp anything on your documents.
Do my PDFs get uploaded while merging?
No. The files are read and combined by your own browser using JavaScript — they never travel over the network.
Can I reorder or delete pages after merging?
Yes - after merging, one click sends the result straight into the Organize tool, where you can reorder or delete pages with live thumbnails, without re-uploading anything.
Does merging work offline?
Yes. SwiftlyPDF is an installable web app - once the page has loaded, every tool including Merge works with no internet connection, because nothing depends on a server.
🔒 Like every SwiftlyPDF tool, this runs 100% in your browser. No uploads, no account needed, no watermarks — ever.