


DevTools is a free browser-based toolbox for everyday developer tasks. It brings a wide range of utilities into one place, so you do not have to jump between multiple websites just to format JSON, test regex, decode JWT, generate UUIDs, preview Markdown or Mermaid diagrams, or inspect SQL schemas. The goal is to make common workflows faster, simpler, and more convenient for developers.
Everything runs directly in the browser, with no login required and no data collection. The toolbox is designed to be lightweight, practical, and easy to use, whether you are debugging APIs, working with text transformations, checking tokens, converting formats, or exploring schemas. More tools are being added over time, with a strong focus on developer experience, clarity, and speed.
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