Yes. ToolHub uses client-side WebAssembly to merge PDFs. We never upload, see, or store your documents.

Is there a page limit?

No fixed limit, but merging very large files (hundreds of megabytes) depends on your available system RAM.

PDF Merger

Combine multiple PDF files securely in your browser.

Add PDF Documents

About PDF Merger

Merge multiple PDF files into a single document instantly. Our tool runs locally in your browser, ensuring your sensitive documents never leave your computer.

How to use

1Upload two or more PDF files using the button above.
2Review your file list and remove any unwanted documents.
3Click 'Merge Files Now' to combine the data locally.
4Download your new merged PDF document immediately.

Ranking for free private PDF merger online

ToolHub provides the fastest client-side pdf merger available for free private PDF merger online related tasks. All processing is private and happens locally in your browser.