Merge PDF
Select two or more PDFs and merge them into a single document. Pages keep their original size and orientation. The merge happens in your browser, so even confidential contracts never leave your device.
Choose your file
Drop your files here
PDF files. Nothing is uploaded — your files stay on this device.
Add at least 2 files to continue.
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About Merge PDF
- What does Merge PDF do?
- Select two or more PDFs and merge them into a single document. Pages keep their original size and orientation. The merge happens in your browser, so even confidential contracts never leave your device.
- Who is it for?
- Students handing in work, professionals sending contracts and reports, administrators preparing submissions, and anyone who has hit an email attachment limit. No technical knowledge is needed.
- Is it free?
- Yes. Merge PDF is free with no account, no watermark on your output, no daily cap and no trial period. Because it runs on your own device it costs us nothing to run, which is why there is no catch.
- Is it safe to use with confidential files?
- Yes, and not because we promise to behave. Merge PDF never sends your file anywhere — the work happens in your browser. There is no upload, so there is no copy of your document in our systems at any point.
- What file formats are supported?
- Input: PDF. Output: PDF.
- Are there any limits?
- Up to 30 files at a time. Practical limit is your device memory, not a server quota.
- Are my PDFs uploaded anywhere?
- No. The merge runs in your browser using JavaScript. Open your browser network tab while you use it — you will see no file upload.
- Can I control the page order?
- Yes. Files merge in the order they appear in the list, and you can reorder them before running the merge.
- Is there a file size limit?
- There is no server-imposed limit. Because processing is local, the ceiling is how much memory your device can allocate — typically several hundred megabytes.
How to use it
- 1
Add your file
Drag it onto the box above, or use Browse files. On a phone you can also take a photo or pick from your camera roll.
- 2
Check the settings
Sensible defaults are already chosen. Most people never need to change them.
- 3
Run it
The progress bar shows real progress, not a decorative animation. Everything happens on your device.
- 4
Preview the result
Look at the output before you download. If it is not right, adjust a setting and run it again — nothing has been saved anywhere.
- 5
Download
Save the file. Closing this tab discards it from memory, so download anything you want to keep.