Developer builds 59 privacy-first browser tools in vanilla JS with zero dependencies

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A developer has publicly launched Antigravity Tools, a collection of 59 free, browser-based utilities built entirely in vanilla JavaScript without any external dependencies, backend servers, or analytics. The project was motivated by privacy concerns around popular online tools, such as JWT decoders and regex testers, which can log or transmit user data to remote servers. Every operation in Antigravity Tools runs locally in the browser using native APIs including Web Crypto, Canvas, Web Audio, and IndexedDB. The toolkit covers a broad range of developer needs, including JWT inspection, RSA key generation, JSON formatting, cURL conversion, regex testing, and AI prompt utilities. The tools are available for free at antigravitytools.app.

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