Merge PDF Online Free
Combine multiple PDF files into one. Drag, reorder, merge — done. Everything runs in your browser; nothing is uploaded anywhere.
Drop PDFs here
or click to browse — add as many as you need
Need more PDF power?
SubVert PDF Pro unlocks unlimited merges, compress, split & more — $4.99/mo
All PDF processing happens locally in your browser. Your files are never uploaded to any server.
How to merge PDF files online
- 1
Add your PDFs
Click the upload zone or drag and drop two or more PDF files onto the page. You can add as many files as you need.
- 2
Set the order
Use the up and down arrows to arrange the files exactly as you want them to appear in the final merged PDF.
- 3
Merge
Click the Merge button. Your browser combines all the files locally — no data ever leaves your device.
- 4
Download
Click Download merged.pdf to save the result. Done — no account, no email, no watermark.
Frequently asked questions
Is this PDF merger really free?
Yes, completely free with no hidden limits. You can merge as many PDFs as you like, as often as you like, at no cost and with no account required.
Are my files uploaded to a server?
No. This tool runs entirely in your browser using the pdf-lib library. Your files are never sent to any server — they stay on your device the whole time. This makes it safe for sensitive documents like contracts, invoices, and legal files.
Do I need to create an account or sign up?
No signup, no email, no account. Just open the page, add your PDFs, and download the result.
What's the maximum file size or page count?
There is no hard limit imposed by this tool. In practice, very large files (hundreds of MB) may be slower because all processing happens in your browser's memory.
Will the merged PDF have a watermark?
No watermarks, ever. The merged PDF is a clean, standard PDF that looks exactly like your original files combined.
What if I need more PDF tools?
SubVert PDF Pro adds compress, split, annotate, and more for $4.99/mo. You can try it risk-free and cancel anytime.