Merge PDF Files Online — Free
Combine multiple PDFs into one document in seconds. Free, no signup to start, and your files never leave your device.
Click to add PDFs
or drag and drop — you can add files multiple times
How to merge PDF files
Select or drag in the PDFs you want to combine.
Reorder them with the up and down arrows if needed.
Click Merge and your combined PDF downloads automatically.
Private by design
Your files are merged right in your browser. Nothing uploads to a server, so nobody — including us — ever sees them.
Fast and free
No account needed to start, no watermarks, no waiting in a queue. Done in seconds.
Works everywhere
Runs on any modern browser — Windows, Mac, phone, or tablet. Nothing to install.
Frequently asked questions
Is it safe to merge PDFs online?
With StylusPDF, yes — because nothing goes online. The merging happens entirely inside your browser on your own device, so your documents are never uploaded, stored, or seen by anyone else. That makes it safe even for sensitive files like contracts or bank statements.
Is merging PDFs free?
Yes. You can merge PDFs for free without creating an account. A free account gives you more daily downloads, and StylusPDF Pro removes all limits.
How many PDFs can I combine at once?
You can add as many PDFs as you like and reorder them before merging. Free users can merge files up to 50 pages; Pro users up to 500.
Will merging change the quality of my PDFs?
No. Your pages are preserved as-is and fitted neatly to a standard page size, so text stays sharp and images keep their quality.
Do I need to install anything?
No. StylusPDF runs in your web browser. There’s nothing to download or install, and it works on any device.