Merge PDFs without uploading them

A Chrome extension that combines PDF files entirely inside your browser. Free, unlimited, and your documents never leave your computer.

Add to Chrome

Free forever — not a trial

No uploads No sign-up No watermarks Zero permissions

Why this exists

The most-installed PDF merger on the Chrome Web Store has a hundred thousand users and a 3.5-star rating. Its reviews say the same thing over and over:

“Paywalled after you do all the work.”

“Not free. One free merge and then you have to pay.”

You drag in your files, put them in order, hit merge — and only then does it ask for money. It also weighs about 30 KB, because it does no work itself: it sends your files to its own servers.

This extension was built to be the opposite of that. Merging is free and unlimited, permanently. There is no step where the price changes. And nothing is uploaded, because there is nowhere to upload it to.

How it works

Everything runs in the tab The PDF engine is bundled into the extension. Your files are read from disk, combined in memory, and saved back — all on your machine.
Drag to set the order Reorder the list and the merged document follows it, top to bottom. Page counts are shown before you commit.
It asks for no permissions Chrome will tell you so when you install it. There is no host access, no tab access, nothing to grant.
Works offline Nothing to load, nothing to wait for. Disconnect your network and it behaves identically.

Questions

Is it really free, or free until something?

Merging is free and unlimited, with no file-count or page limits and no watermark. Paid features may be added later for things like batch jobs or password removal — merging itself stays free.

How can I check that nothing is uploaded?

Open the workspace, press F12, and watch the Network tab while you merge. You will see requests for the extension's own files and nothing else. You do not have to take our word for it.

Is there a file size limit?

No limit is imposed. Very large files are bounded by your browser's memory rather than by us.

Can it merge password-protected PDFs?

Not yet. Encrypted files are rejected when you add them, with a message explaining why, so a merge never fails halfway through. Remove the password first.

What happens to my files?

Nothing. They are read, combined, and handed back to your browser's downloads. Nothing is stored, logged, or transmitted. See the privacy policy.