Local PDF Merger

Merge your PDF files directly in your browser.

100% Local. Files never leave your device.

Drag and drop PDF files here

or click to select files

Why use a Local PDF Merger?

100% Private & Secure

Unlike traditional online PDF tools, we do not upload your files to any external server. The merging process happens entirely within your browser using WebAssembly. Your sensitive documents never leave your device.

⚡ Fast & No Limits

No waiting in server queues, no strict file size limits, and absolutely no watermarks. Merge as many PDF files as you need, completely free of charge.

Works on All Devices

Whether you are on Windows, Mac, Linux, or mobile, this tool works directly in your modern web browser (Chrome, Firefox, Safari, Edge) without any software installation.

How to merge PDFs

  1. Drag and drop your PDF files into the box above.
  2. Drag the files to reorder them in your desired sequence.
  3. Click "Merge and download" to get your combined file instantly.

Frequently Asked Questions

Is this PDF merger really free?

Yes, 100% free. There are no hidden costs, premium tiers, or watermarks.

Are my files uploaded to a server?

No. The tool uses client-side JavaScript (pdf-lib) to process files locally on your computer. Your data never travels over the internet.

Is there a file size limit?

Since processing happens on your device, the limit depends on your computer's RAM. It easily handles dozens of standard documents.