Zaarm TechZaarm Tech

Merge PDF

Combine multiple PDFs into one file, in whatever order you choose — free, no sign-up.

Drop two or more PDFs here

or click to browse · up to 20 files, 50MB each

Your files never leave your device

About this tool

Splitting a document across multiple PDFs makes it harder to share, print, or archive. This tool combines any number of PDFs into a single file, in the exact order you arrange them, without re-encoding or altering the pages themselves — so quality, fonts, and formatting all stay exactly as they were. Everything runs locally in your browser, so your files are never uploaded to a server, and there's no limit on how many times you use it.

Frequently asked questions

Is this actually free?

Yes, completely — no sign-up, no watermark, no hidden limits. There's nothing to upgrade to.

Do my files get uploaded anywhere?

No. Merging happens entirely in your browser — your PDFs are never sent to our servers, so nothing ever leaves your device.

Can I control the order of the pages?

Yes — add your files, then use the up/down arrows next to each one to arrange them in the order you want before merging.

Is there a limit on how many files I can merge?

You can merge up to 20 PDFs at once, each up to 50MB. That covers the vast majority of real-world use cases in one pass.