📄 Free PDF Merger
Merge up to 25 PDF files (500MB total) – processed locally in your browser, with no PDF upload, reorder files as needed.
Drag & drop PDF files here or click to select
Maximum files: 25 | Total size limit: 500 MB
No files selected
.pdf will be added automatically. You must enter a name.
Local PDF processing – your files are not uploaded for the merge
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❓ Frequently Asked Questions
What are the limits?
Up to 25 PDF files, with a combined total size of 500 MB. No individual file size limit.
Are my files safe?
The PDF merge is performed locally in your browser, so your PDF files are not uploaded to our server.
Do I need to create an account?
No sign-up required.
Can I select PDF files from different folders?
Absolutely! The file picker lets you navigate to any folder on your computer.
What happens if I close the browser tab during a merge?
The merge will stop immediately and you'll lose progress. For large merges, use our desktop tool.
Can I merge password‑protected PDFs?
No, this tool cannot open encrypted PDFs. Unlock them first using a PDF unlocker tool.
Does this work on mobile?
Yes, it works on any device with a modern browser (iOS Safari, Chrome for Android).
How do I reorder files?
Use the ▲ (up) and ▼ (down) buttons next to each file in the list.
Is this tool really free?
Yes, completely free. The desktop version adds extra features (unlimited files, page selection) but the basic merger remains free.