All My Favorite Dev Tools Were on 10 Different Websites. So I Built One With Everything

I've been using JSON formatters, cron schedulers, password generators and Base64 encoders since my first day as a web developer. Always jumping between tabs, always the same ugly interfaces from 2012. Then last year JSONFormatter.org and CodeBeautify.org made the news — years of user data exposed. Passwords, API keys, cloud credentials. Stuff developers had been pasting there assuming it was safe. That was enough for me. So I built devessentials.dev — a collection of the tools I actually use, running 100% in your browser. No backend. No server ever sees what you paste. You can verify it yourself: open DevTools → Network tab, use any tool, watch zero requests go out. What's in it JSON Formatter, Validator & Beautifier JWT Decoder & Debugger Hash Generator (MD5, SHA-256, SHA-512) Base64 Encoder/Decoder UUID Generator (v1, v4, v7) Password Generator & Strength Checker Cron Builder Diff Checker URL Encoder/Decoder JSON ↔ YAML, JSON ↔ CSV converters JSON Repair (great for fixing broken LLM