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About Merge PDFs
Merge PDFs — free, private, browser-based pdf tool
Combine several PDFs into one file. Drop them in, drag them into the order you want and download a single merged PDF.
Why use Merge PDFs
- ·Files stay on your device — nothing is uploaded
- ·No signup needed
- ·Works in any modern browser, on any OS
- ·Free daily use; Pro removes limits and watermarks
How to use it
- 1Drop two or more PDFs (up to 10 free, 100 with Pro).
- 2Drag the files into the order the pages should appear.
- 3Download one merged PDF — pages are copied unchanged, so text stays selectable.
What is kept
Pages are copied as they are — text stays selectable, links and page sizes are preserved — using pdf-lib, the same open-source library many desktop tools use. Nothing is re-rendered or recompressed.
Limits
You need at least two files. Free use covers up to 10 files at a time; Pro raises that to 100.
How it works
pdf-lib and pdfjs-dist render and edit the PDF stream directly in your browser. Tesseract.js handles OCR with on-device language packs. The processing code runs inside the page, so your file is not uploaded to a server — you can confirm this in your browser's DevTools → Network tab.
Frequently asked questions
Can I change the order of the files?+
Yes. Drag the files into the order you want before exporting.
Does merging reduce quality?+
No. Pages are copied, not re-rendered, so text and images are unchanged.
Are my files uploaded?+
No. Merging happens in your browser.
Is Merge PDFs free?+
Yes, with a daily free allowance and no signup. Xonvert Pro ($4.99/month) removes the daily limits and the watermark on exported files.
Do I need to install anything?+
No. It works in any modern browser on Windows, macOS, Linux, ChromeOS, Android and iPad.
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Add Page Numbers
Stamp page numbers anywhere on every page — your format, your spot.
Add Watermark
Add a translucent text watermark across every page — DRAFT, CONFIDENTIAL, anything.
Delete Pages
Remove specific pages from a PDF — drop any range you want gone.