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Dark Mode Extension Features
Everything You Need for the Best Dark Mode Extension
Turn Off the Lights is not just a simple dark mode extension. It is a complete browser enhancement built to give you full control over how every website looks in the dark.
Night Mode for Every Website
Applies dark mode to every website you visit — YouTube, Google, Reddit, Wikipedia, Amazon, Facebook, news sites, and beyond.
Works in Every Major Browser
Available for Chrome, Firefox, Edge, Safari, Opera, Brave, Vivaldi, Samsung Internet, Yandex, and Naver Whale.
OLED True-Black Support
Set backgrounds to pure black for OLED screens — pixels turn off, battery lasts longer, contrast is perfect.
Element-Level Color Control
Control background, text, links, buttons, and borders independently. Build your perfect dark mode theme.
Sunrise/Sunset Scheduling
Auto-activate dark mode at sunset and restore at sunrise, or set custom hours for your routine.
Cinema Mode + Dark Mode Combined
Dim any webpage around a video for cinema-style viewing — the original feature that started it all in 2009.
How It Works
Enable Dark Mode Extension in Under 30 Seconds
Turn Off the Lights is available in every major browser store and takes less than 30 seconds to install and activate. No configuration needed — it works instantly.
Choose Your Browser
Turn Off the Lights is available for Chrome, Firefox, Edge, Safari, Opera, Brave, and more.
Install from Official Store
Visit your browser's extension store, search 'Turn Off the Lights', and click install — free and takes 10 seconds.
Enable Night Mode
Open Options → Night Mode tab and toggle the switch on. Every website now loads in dark mode.
Customize Your Dark Mode
Choose colors, enable OLED black, set a schedule, create themes — make it exactly the dark mode extension you want.
Browser Support
One Dark Mode Extension Extension. Every Browser.
Turn Off the Lights is available across all major desktop browsers. Install it in one browser and your Night Mode settings sync automatically to others.
⬇ Install Free — Dark Mode Extension
FAQ
Frequently Asked Questions About Dark Mode Extension
Turn Off the Lights is widely regarded as the best dark mode extension. It applies Night Mode to every website, works in all major browsers, supports OLED true-black, and is completely free and open-source.
Yes — Night Mode applies to every website you visit, regardless of whether that site has its own dark mode. YouTube, Google, Reddit, Amazon, Facebook, news sites, and more all go dark.
Yes — Turn Off the Lights is completely free and available for both Chrome (Chrome Web Store) and Firefox (Firefox Add-ons). It also works in Edge, Safari, and Opera.
Yes. Set the Night Mode background to #000000. On OLED displays, black pixels are completely off — saving battery and providing the deepest possible contrast.
Why Turn Off the Lights
The Most Complete Dark Mode Extension Solution Available
When searching for a dark mode extension, most users want one thing: every website they visit to be dark — not just the browser shell. Turn Off the Lights is the most complete dark mode extension available, trusted by millions since 2009.
A Dark Mode Extension That Works on Every Website
Many dark mode extensions use blunt CSS invert filters that distort images and make text hard to read. Turn Off the Lights takes a smarter approach — its Night Mode intelligently converts white backgrounds to your chosen dark color while keeping images, videos, and media fully visible.
The Only Dark Mode Extension for Every Major Browser
Turn Off the Lights is available as a dark mode extension for Chrome, Firefox, Microsoft Edge, Safari, Opera, Brave, Vivaldi, Yandex, Samsung Internet, and Naver Whale — more browsers than any competitor. Install it in multiple browsers and your Night Mode settings sync automatically.
More Than Just a Dark Mode Extension
Beyond Night Mode, Turn Off the Lights includes cinema-style video dimming, Auto HD up to 8K on YouTube, Atmosphere Lighting, Audio Visualization, Screenshot Capture, Mouse Volume Scroll, and Video Filters — making it the most feature-rich dark mode extension on the market, all for free.
Open Source, Private, and Free — Always
Turn Off the Lights collects no personal data, displays no advertising, and charges nothing. The extension is fully open-source under the GNU General Public License Version 2 (GPLv2), with its complete source code available on GitHub for anyone to inspect. It has been in continuous development since 2009 and remains one of the most trusted browser extensions available, with millions of active users across all major browsers. Stefan Van Damme is the solo developer and has maintained the extension with monthly updates for over 15 years.