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All-in-one developer toolkit: inspect CSS, detect fonts & colors, measure spacing, take screenshots, and more.

Lightweight API client in your browser. Send requests, inspect responses, manage environments. No app needed.

Clean, fast JSON viewer with tree view, search, and syntax highlighting. No ads, no tracking.

Inspect Tailwind classes on any element. Look up any class to see its CSS. Reverse lookup CSS to Tailwind.

Developer cookie manager with real-time monitoring, environment profiles, and export to curl/wget.