Anti-Flashbang paints a dark background at the very first moment of page load, preventing the white flash between navigations.
Unlike Dark Reader, it never touches individual elements. The curtain is a single CSS rule at user-stylesheet origin - no !important. When the page's own stylesheet loads, it naturally overrides the curtain via cascade ordering. No removal logic, no DOM mutation, no broken pages.
v1.2: Per-site exclusions Sites where the dark background leaks through can be disabled from the popup. Uncheck "Enable on this site" - the curtain is never injected on that domain or any of its subdomains. Excluding github.com covers gist.github.com, docs.github.com, and so on. Already-open tabs pick up exclusions immediately without reloading.
Toggle on/off from the toolbar icon. No network calls. No telemetry. No remote code. Just cascade physics.
