Launched this week
HMASTER

HMASTER

The modern, privacy-first HTTP Header Manager for Chrome

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Hey Product Hunt! 👋 I'm Jonatan, the creator of HMASTER. As a web developer, I often found myself needing to tweak HTTP headers—whether to bypass CORS issues during development, test APIs with different Authorization tokens, or simulate mobile devices. I felt that existing tools were either stuck in the past (clunky UI), relied on outdated APIs that slowed down the browser, or were just too complex for quick tasks.
HMASTER gallery image
HMASTER gallery image
HMASTER gallery image
HMASTER gallery image
Free
Launch tags:Chrome Extensions•Developer Tools
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JONATAN HN
Maker
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HMASTER allows developers to easily modify, add, or delete HTTP request and response headers. Built with the latest Manifest V3 technology for zero latency. Features include Regex filtering, one-click presets (CORS, JSON, Mobile UA), Dark Mode, and multi-language support. Completely local and privacy-focused. HMASTER permite a los desarrolladores modificar, añadir o eliminar cabeceras HTTP fácilmente. Construido con la última tecnología Manifest V3 para latencia cero. Incluye filtrado por Regex, presets de un clic (CORS, JSON, UA Móvil), Modo Oscuro y soporte multi-idioma. Totalmente local y enfocado en la privacidad.