Nightglass: Dark Mode for Every Website

Dark mode for every website that doesn't break pages. Smart colour conversion, per-site control. 30-day free trial.

Nightglass makes every website dark, and unlike simple "invert" extensions, it doesn't break the page. Instead of flipping the whole screen, Nightglass reads each site's own styles and converts every colour to a carefully balanced dark version. Photos, logos and video stay exactly as they are. Coloured buttons keep their colour. Sites that are already dark are detected and left alone. ★ WHY NIGHTGLASS • Smart colour conversion: text, backgrounds and borders are each handled differently, in a perceptual colour space, so pages stay readable and natural. • Doesn't fight the website: Nightglass never edits the page's code, so modern apps keep working. Turn it off and every colour returns exactly as it was. • Works on modern sites, including single-page apps, web components, embedded frames, and styles loaded from other servers. • Leaves already-dark sites alone. • Filter mode as a backup: for the rare page Smart mode can't handle, a one-click classic mode that always works. ★ YOUR NIGHT, YOUR WAY • Turn it on or off per site, or choose "Always dark" for your favourites • Five themes (Dark, Dim, Midnight, OLED black, Warm) or your own colours • Brightness, contrast, warmth (blue-light reduction), grayscale and image dimming • Follow your system's dark mode, or set a schedule (e.g. 7 pm to 7 am) • Custom CSS per site for power users • Keyboard shortcuts: Alt+Shift+D for this site, Alt+Shift+A for everywhere (Option+Shift on Mac) • Export and import your settings ★ PRIVATE BY DESIGN No account. No tracking. No analytics. Nightglass never collects or sends your browsing history or page contents. Everything happens inside your browser. ★ PRICING Free for 30 days with every feature, no card needed. After that, unlock Nightglass forever with a single A$3.99 payment. No subscription. One licence covers up to 5 devices, and it syncs automatically to computers signed in to your browser.