Picture the last time you needed to decode a JWT. You Googled "jwt decoder," clicked the first result, and pasted in a token — often a live one — into a text box on a server you know nothing about.
That moment bugged me for years. So I built DevTools Kit: 30 everyday developer utilities that do all their work inside your browser. Nothing you paste is ever sent anywhere. No sign-up, no ads, no analytics watching you.
The one rule: your data never leaves your machine
This is the whole reason the project exists. When you paste a JWT, an API response, or a chunk of production SQL into most online tools, that data hits someone else's backend. DevTools Kit runs every operation client-side. Don't take my word for it — open the page, kill your network connection, and every tool still works.
What's inside
