stupidPDF — Free Offline PDF Editor

Free offline PDF editor — merge, split, compress, convert. Files never leave your device.

Questions

What is stupidPDF?

stupidPDF is a free PDF toolkit that runs in the browser. It merges, splits, compresses, converts, and edits PDFs on this device. There is no account.

Is it free? What does it cost?

stupidPDF is free. There is no paid plan and no account fee.

Do my files get uploaded, or do they stay on my device?

Files stay on your device. Processing stays in the browser. stupidPDF does not upload PDFs to a server.

Can it merge, split, compress, flatten, or encrypt a PDF?

Yes. Merge, split, compress, flatten form fields, and password-protect a PDF. Those tools, and the rest of the toolkit, run in the browser.

How is it different from uploading a PDF to a website?

An upload site sends the PDF to a server. stupidPDF does not. Processing stays in the browser. Files never leave your device.