Theme Switcher — Dark/Light Mode Customizer

Force Dark or Light mode on any website. Control background, text, navbar & card colors with brightness sliders. 100% free.

Theme Switcher instantly forces Dark Mode or Light Mode on any website — perfect for late-night browsing or making forced-dark sites easier to read. Features - One-click Dark/Light toggle for the active tab - Smart color-invert dark mode that keeps photos and videos looking natural - Global brightness slider (50%–150%) - Advanced per-element controls — independently adjust Background, Text/Font, Navigation Bar, and Cards/Containers, each with its own intensity slider - Settings save automatically and re-apply instantly every time you revisit a page or restart your browser - One-click Reset to Defaults Privacy first Theme Switcher works 100% locally in your browser. It does not use any external APIs, does not send your browsing data anywhere, and does not track you. All preferences are stored only on your device using Chrome's built-in storage. Note: Like every Chrome extension, Theme Switcher cannot run on chrome:// pages or the Chrome Web Store itself — this is a browser-level restriction from Google, not a limitation of the extension. Free forever. No sign-up, no ads, no premium tier.