Every site.
Your theme.
Dark mode, light mode, and everything in between. Nox gives you smart theme control on every website — no more blinding white screens.
Smart, not brute-force.
Nox detects what a site already does and only steps in when it needs to. Per-site settings, zero config.
Smart Detection
Nox detects whether a site is already dark or light and adapts automatically. No duplicate dark modes, no broken pages.
Per-Site Control
Set dark mode on one site, light mode on another. Nox remembers your preferences for every domain you visit.
Instant Theming
Themes apply before the page even renders. No flash of white, no layout shift. Just seamless dark mode from the first pixel.
Works Everywhere
Chrome, Firefox, Edge, Safari. One extension, every major browser. Your theme follows you wherever you browse.
Install and forget.
Install Nox
Add Nox to your browser from the Chrome Web Store, Firefox Add-ons, or your browser's extension store.
Nox detects each site
It figures out if a site is already dark, has a built-in toggle, or needs a theme applied — then does the right thing.
Override when you want
Click the Nox icon to toggle modes per site, adjust contrast, or disable on specific pages. Your call.
Your eyes will thank you.
Stop squinting at blinding white pages. Nox makes the web look the way you want it.
Install for Free