SmartDevBox is a free, AI-powered developer toolbox that lives entirely in your browser. Paste anything — Base64, JSON, JWT tokens, XML, SQL, URLs, Unix timestamps, X.509 certificates, cron expressions, color codes, and 80+ other formats — and it auto-detects the format and runs the right tool instantly. No sign-up. No server. No context-switching. 91 built-in tools across encoding, formatting, conversion, generation, inspection, and text — all 100% client-side.
