Need to combine several PDFs into a single document? This free PDF merger joins your files in seconds — directly in your browser, with no signup and no uploading. Because your files never leave your device, it is safe to merge contracts, invoices, scans, and anything else you would rather not hand to a random server.
How to merge PDF files
- Add your PDFs — drag and drop them into the box above, or click Browse files and pick them from your device. You can add as many as you need.
- Put them in order — use the ↑ and ↓ buttons next to each file. The merged document follows the list from top to bottom.
- Click Merge — the files are combined on your device in a second or two.
- Download — save the merged PDF. Done. Nothing was uploaded, and nothing is stored.
When merging PDFs comes in handy
Combining files is one of those small tasks that comes up constantly: assembling scanned pages into one document for a visa or job application, packaging invoices for bookkeeping, joining chapters of a report before sending it to print, or attaching several signed forms as a single file because a portal only accepts one upload. Instead of installing desktop software for a ten-second job, you can do it here and move on.
Why this merger is different
Most online PDF tools upload your files to their servers, process them there, and let you download the result. That works, but it means your documents — often contracts, IDs, or financial statements — travel to a machine you know nothing about. This tool takes the opposite approach: the PDF engine runs inside your browser, so your files stay on your device from start to finish. A pleasant side effect is speed — there is no upload or download queue, so a typical merge finishes faster than an upload-based tool can even begin.
Limits and tips
- File size: up to 100 MB per file. Very large combined merges are limited by your device’s memory rather than by the tool.
- Encrypted PDFs: password-protected files can’t be read and will show a clear error — remove the password first with Unlock PDF (you need the current password).
- Page order: pages keep the exact order of the source files; the tool never re-sorts or compresses your content, and output quality is identical to the originals.
Looking for more? Browse all our free browser tools or try the calculators — every one of them runs on your device, just like this merger. If you write as much as you merge, the word counter is handy too.
Your privacy, guaranteed by design
This is not a policy promise — it is how the tool is built. Processing happens in your browser via client-side JavaScript; there is no upload endpoint at all. Close the tab and nothing about your files remains anywhere.