DevToolBox
50+ free browser-based dev tools. No signup required.
What is DevToolBox?
DevToolBox is a collection of 50+ free browser-based developer tools. Format JSON, encode Base64, decode JWTs, generate UUIDs, test regex, convert colors, generate QR codes, and much more. Every tool runs entirely in your browser — no signup required, no data sent to any server. Built for developers who value privacy, speed, and simplicity. Zero cost to use, works offline after first load.
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