About Data Tools

Convert spreadsheets, CSV and JSON instantly in your browser. Files stay on your device, with no uploads, no signup and no server-side processing.

Privacy-first by design

Unlike most online tools that upload your files to a server, Data Tools does all the work right inside your browser with modern JavaScript and WebAssembly. That means your files are never sent anywhere — it's faster, works offline once loaded, and keeps your data completely private.

Free forever

All tools are free to use. The site is supported by unobtrusive advertising so we can keep building and maintaining useful utilities.