About OneFileConverter

OneFileConverter is a free set of 83 file tools for pdf, image, video, audio files. There is no account, no watermark and no paid plan.

Most tools run on your device

83 of the 83 tools process files inside your browser, using WebAssembly, Web Workers and the browser’s own media and graphics features. The file is read from your device and the result is written back to it; nothing is uploaded. After your first visit these tools also work offline.

Fair use

Browser tools have no daily limit — your device does the work. Server and cloud-AI tools cost real money to run, so they have daily fair-use limits per visitor and a quick automatic bot check.

What we measure

Cookie-less, aggregate analytics count page views and anonymous events such as “a tool finished”, with the tool, file count, size range and duration. Never file names or contents.

Built on open source

The processing engines are open-source projects, including pdf-lib, PDF.js, jSquash (MozJPEG, OxiPNG, libwebp, libavif), Mediabunny, Transformers.js with ONNX Runtime, and Tesseract.js.

Questions? See the FAQ.