How to merge PDF
- Add two or more PDF files.
- Drag them into the order you want.
- Select Merge PDFs and download the result.
Questions
Is there a limit on file size or number of files?
There’s no set limit. Because the work happens on your device, very large files depend on your device’s memory. Most computers handle a few hundred megabytes comfortably.
Are bookmarks and form fields kept?
Page content, links and annotations are kept. Bookmarks (the outline) and interactive form fields from the original files may not carry over.
Are my files uploaded to a server?
No. UserPDF runs entirely in your web browser. Your files are read and processed on your own device and are never sent to us or anyone else. You can even disconnect from the internet after the page loads and the tools keep working.
Is it free?
Yes. UserPDF is free to use with no sign-up and no watermark on your files. It’s supported by ads.