About DevTools Kit

DevTools Kitis a free collection of everyday developer tools — converters, compressors, and formatters — that run entirely in your web browser. There's nothing to install, no account to create, and no file ever leaves your device.

Most online conversion tools work by uploading your file to a server, processing it there, and sending the result back. We built DevTools Kitdifferently: every tool uses your browser's own JavaScript and WebAssembly engine to do the work locally, so your data — CSVs, JSON, images, PDFs — never has to leave your computer.

That means these tools are safe to use even for sensitive or confidential files, work just as well offline once a page has loaded, and don't depend on how busy our servers are — the only limit is your own device.

The site is free to use and supported by advertising. We don't sell or share any data about the files you process, because we never receive that data in the first place — see our Privacy Policy for details.

Have a tool you'd like to see added? Reach out on the Contact page.