About Kit-Bin

Kit-Bin is a collection of free, private, browser-based file tools, PDF, image, audio, video, and data, that run entirely on your device. There's no server involved in the actual conversion work; your device does it, using WebAssembly and native browser APIs, so the file you select never needs to leave it.

That's a deliberate choice, not a marketing line. See how Kit-Bin actually works for the technical explanation, including how to verify it yourself using your browser's own developer tools.

The site is free to use, with no account required, and there is no subscription. Kit-Bin displays a small number of banner advertisements to help cover hosting and development costs, only if you accept them in the cookie banner shown on your first visit — see how advertising works here for the full details. If a tool has genuinely helped you, there's a contact page and a way to support the site directly in the footer.

Kit-Bin also publishes a small set of guides explaining the file formats and mechanics behind the tools, why iPhone photos won't open on Windows, why a PDF is larger than it looks, why a video can sound quiet even at full volume, for anyone who wants the actual explanation, not just the conversion.