Merge PDF files
Combine two or more PDFs into a single file. Everything happens in your browser - your PDFs are never uploaded.
Drop PDF here or click to browseYour files stay in your browser.
How it works
- 1Add your PDFs. Drop PDF files into the box, or click to browse. Add as many as you like.
- 2Arrange the order. Drag files to reorder them, or remove any file you didn't mean to add.
- 3Merge and download. Click Merge. The combined PDF downloads to your device - nothing is uploaded.
Why use this
- Private. Files never leave your browser.
- Free. No signup, no watermark, no limits.
- Fast. One page, one action, one download.
Frequently asked
Is it safe to merge PDFs online here?
Yes. The merge runs entirely in your browser using JavaScript. Your files are never sent to a server.
Is there a file size limit?
There's no hard limit imposed by us. Your browser's memory is the practical ceiling - most desktops handle several hundred MB.
Does it work offline?
After the page loads once, the tool runs client-side. If your connection drops, merging still works.
Are my files uploaded anywhere?
No. We never upload, store, or log your PDF contents or file names.
Does it work on mobile?
Yes, on modern iOS and Android browsers. Very large files may hit mobile memory limits.
Do I need to sign in?
No. Every tool works without an account. Signing in is optional and only saves your preferences.
Related tools
Last updated 2026-09-15.