developer multitool
Ten dev tools, one terminal. JSON, base64, JWT, URL, UUID, time, cron, hash, diff, regex. Everything runs in your browser — nothing is ever uploaded. Big libs load only when you use them; AI is optional polish over g4f with provider failover.
json · format · validate · minify base64 · utf-8 safe encode / decode jwt · decode header + payload, exp check url · encode / decode components uuid · crypto v4, bulk generate time · epoch ⇄ iso ⇄ local, live clock cron · explain schedule in english hash · sha-1/256/384/512, text or file diff · line-level LCS diff regex · live tester + AI generate
press 0–9 to switch tools · everything runs in your browser