DevTheme Tester - Native Light and Dark Mode Toggle
Developer utility to force-test Light/Dark native CSS media queries via Debugger API.
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The high-precision tool for web developers to test Dark and Light mode themes instantly, regardless of site security policies.
Are you tired of digging through Chrome DevTools' deep "Rendering" menu just to toggle prefers-color-scheme? Do other dark mode extensions fail on your local development sites because of strict Content Security Policies (CSP)?
DevTheme Tester is a minimalist, open-source utility designed specifically for the modern web development workflow. It provides a one-click solution to force-test your CSS media queries using the high-level Chrome DevTools Protocol (CDP).
Why DevTheme Tester?
Most "Dark Mode" extensions work by injecting custom CSS or running scripts on the page. While fine for general users, these methods are unreliable for developers because:
They don't trigger actual CSS @media (prefers-color-scheme) queries.
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