Toolsel

Developer Tools

Format, decode, convert and inspect the things you work with every day.

11 tools

The tools here cover the small, constant jobs that sit between you and the thing you were actually doing: making a minified API response readable, checking what is inside a token, turning a timestamp into a date you can reason about.

Each one runs entirely in your browser, which matters more here than in most categories — the payloads you paste into a formatter or a JWT decoder are exactly the kind of thing that should not be uploaded to someone else's server.

All developer tools

JSON & data