Merge PDF

Combine PDFs without uploading them.

Merge multiple PDFs into one right in your browser. Drag to set the order, combine in seconds, and download the result. Your files never leave your device.

Merge PDFs free How it works

Sending multiple confidential files to merge them is the wrong trade-off.

A contract, a signature page, and an exhibit list are all sensitive. Most "merge PDF online" tools require uploading all of them, sometimes in sequence, to a server you don't control. KeptPDF merges in your browser, so none of those files ever leave your device.

The difference in one sentence

Merging PDFs shouldn't require uploading every one of them to a stranger's server first.

KeptPDF combines your PDFs in the browser using your device's own processing power. There's no upload endpoint, and you can confirm it yourself in the Network tab. Open developer tools, add your files, merge them. Your files never appear in an outbound request.

How to merge PDFs

Three steps, entirely on your device. No account needed, and nothing gets uploaded.

1. Add your PDFs

Drop multiple files onto the page or pick them from your device. Each one loads into your browser. Nothing is sent anywhere.

2. Set the order

Drag the files to arrange them exactly how you want the pages to appear in the combined document.

3. Download the merged PDF

One combined file, your pages in the order you chose.

Multiple files. Zero uploads.

No upload

Nothing is sent to a server. All processing happens in your browser, so every file stays on your device from start to finish.

Drag to reorder

Set the final page order visually before merging. Change your mind as many times as you like before downloading.

Any number of PDFs

Add as many files as you need. KeptPDF merges them all into a single continuous document.

Free, no account

Merge PDFs free with no sign-up, no daily limit. Pro ($29/month) supports larger files (hundreds of MB practical limit, browser memory dependent).

Related tools for managing PDFs

Split a PDF into parts Reorder pages visually

Questions, answered.

How do I combine multiple PDFs into one?

Open KeptPDF's Merge tool, drop in all the PDFs you want to combine, drag them into the order you want, and click Merge. Download the combined file. Everything happens in your browser, with no upload required.

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

No hard limit on the number of files. You can add as many as you like. Free accounts can merge with no daily limit. Pro supports larger files (hundreds of MB practical limit per file, browser memory dependent).

Can I merge password-protected PDFs?

You'll need to unlock each protected file first using the Unlock PDF tool, then merge the unlocked copies.

Will merging affect the quality of my PDFs?

No. The PDFs are combined without re-rendering, so content, fonts, and images are carried over as-is. Text stays selectable and quality is unchanged.

Is it free?

Yes. Free with no account, no daily limit. Pro ($29/month).

Can I merge just selected pages instead of whole files?

For mixing individual pages from multiple documents, use the Organize Pages tool. It lets you pull specific pages from multiple PDFs and build a new document visually.

Merge PDFs. Free, in your browser.

Open Merge PDF