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Developer builds browser-only toolkit with 110+ tools to keep your data private

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A software developer has launched DevTab (devtab.in), a free all-in-one platform offering over 110 developer utilities that run entirely within the user's browser without making any server-side requests. The project was motivated by privacy concerns around popular online tools like jwt.io and regex101, which transmit user-pasted data — including JWTs, API keys, and regex patterns — to their servers. DevTab consolidates tools such as a JWT decoder, JSON formatter, regex tester, SQL formatter, and curl-to-code converter into a single interface, with no signup required. The developer states that users can verify the zero-network-request claim by opening their browser's DevTools and monitoring the Network tab while using the site. Built as a side project using Next.js 14, TypeScript, and Tailwind CSS, the platform currently has 146 tools planned with new ones being added weekly.

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