About

Last updated: August 2026

PDFmuto is a set of free PDF tools that run entirely in your browser. Merge, split, compress, rotate, and organize PDFs without uploading a single file to a server.

Why we built it

Sending a PDF to an online tool should not mean sending your document to a stranger. Most “free” PDF sites upload your files to a server, keep copies for a while, and quietly monetize them. We wanted the same convenience with none of that: every tool here processes your files locally on your own device, using the same browser technology that powers modern web apps.

How it works

When you pick a file, it is read by JavaScript running in your browser tab. The tool modifies a copy of the document in memory and hands the result back to you as a download. Nothing is transmitted, stored, or tracked — close the tab and the data is gone.

For the technical detail — the libraries, the pipeline, and exactly what does and does not leave your device — see ourlocal processing architectureexplainer.

What we do not do

• We do not upload, store, or log your files.
• We do not require an account or registration.
• We do not watermark or degrade output.
• We never charge for any tool on this site.

Limitations

Because everything runs on your device, very large files depend on your browser’s memory. If a tool feels slow, try a smaller file or a recent version of Chrome, Firefox, Edge, or Safari.