Yes, this PDF merge tool is 100% free to use. There are no hidden fees, watermarks, or limitations on the number of files you can merge.

Is it secure? Where are my files stored?

Your files are completely secure because all processing happens entirely in your browser using pdf-lib. Your PDFs never leave your device and are never uploaded to any server.

What is the file size limit?

Each individual PDF file can be up to 50MB. There is no limit on the number of files you can merge.

Can I merge password-protected PDFs?

We attempt to read password-protected PDFs, but some encrypted files may not be supported. If a file cannot be read, you'll see an error message.

Can I change the order of pages?

You can reorder entire PDF files using the up/down buttons before merging. The pages within each PDF will maintain their original order.

Merge PDF

Combine multiple PDF files into one. Reorder pages, preview file details, and download the merged result. 100% private — processed in your browser.

Drag & drop PDF files here

Only PDF files accepted. Max 50MB per file.

How to Merge PDFs

Combine multiple PDF files into one in 3 simple steps.

Upload PDFs

Drag and drop or click to select multiple PDF files from your device.

Reorder Files

Arrange your PDFs in the desired order using the up/down buttons.

Merge & Download

Click 'Merge' and download your combined PDF file.

PDF Merge Tips

Get the best results when merging PDF files.

100% Private

All processing happens in your browser using pdf-lib. Your files never leave your device.

Easy Reordering

Use the up/down buttons to arrange PDFs in any order before merging.

No File Limit

Merge as many PDFs as you need. Each file can be up to 50MB in size.

Originals Preserved

Your original PDF files remain untouched. Only a new merged file is created.

Merge PDF FAQ

Common questions about merging PDF files.