As featured in
The Basics
Dark Mode, Explained
Dark mode (also called night mode or dark theme) inverts the usual screen scheme: instead of black text on a white background, you get light text on a dark background. Operating systems like macOS, Windows, iOS, and Android ship it built in — but on the web, most sites still default to bright white.
Why Use Dark Mode?
The benefits go beyond looks. A darker screen produces less glare in dim environments, which reduces eye strain during evening and nighttime use. Many users with light sensitivity or screen-triggered migraines find dark mode essential rather than optional. And on OLED and AMOLED displays — where black pixels emit no light — dark mode delivers real, measurable battery savings.
Why Most Websites Still Lack It
System dark mode only changes your OS and the apps that respect it — websites are a different story. Some (YouTube, GitHub, X) offer a built-in dark theme, but the majority of the web — including Amazon, eBay, Google Docs, and most banking portals — has none. That's where a dark mode browser extension comes in: it applies a consistent dark theme to every website, not just the few that bothered to build one.
Dark Mode With Turn Off the Lights
Turn Off the Lights is the free, open-source extension that pioneered "dim the lights" for video pages back in 2009. Its Night Mode feature converts any website to your own dark theme — custom background, text, and link colors — while the lamp button can still dim the page around a video for a cinema effect. You can schedule it, sync it with your system theme, or toggle it with a keyboard shortcut.
Dark Mode Guides
Browse Dark Mode by Category
Each category links to a guide hub covering the most popular sites in that group — or install Turn Off the Lights once and get dark mode on all of them at once.
Productivity Tools
Notion, Slack, Microsoft Teams, Zoom, Figma, Jira, Google Docs & more
Messaging Apps
WhatsApp, Telegram, Discord, Messenger, Slack & more
Social Media
Instagram, TikTok, X (Twitter), Facebook, Reddit, LinkedIn & more
Streaming Services
YouTube, Netflix, Twitch, Dailymotion, Bilibili, ESPN & more
Shopping Sites
Amazon, eBay, Etsy, AliExpress, Temu & more
Email Clients
Gmail, Outlook.com, Yahoo Mail & more
Education Platforms
Google Classroom, Khan Academy, Udemy, Canvas, Quizlet & more
Developer Tools
GitHub, GitLab, Stack Overflow, Jira, ChatGPT & more
Banking & Finance
PayPal, Fidelity & other finance portals
Dark Mode Features
What Turn Off the Lights Can Do
Night Mode is just the start — the extension gives you full control over how dark mode behaves.
How It Works
Enable Dark Mode Everywhere 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.
Install Turn Off the Lights
Add the free extension from your browser's store — Chrome, Firefox, Edge, Safari, or Opera.
Enable Night Mode
Open Turn Off the Lights Options → Night Mode tab and enable the Night Mode switch.
Browse in the Dark
Every website now loads in your dark theme. Schedule it, sync it with your system, or toggle it with a shortcut.
FAQ
Frequently Asked Questions About Dark Mode
Dark mode is a display setting that shows light text on a dark background instead of dark text on a light background. It's built into most operating systems and apps, and can be added to every website with a browser extension.
In low-light conditions, yes — a dark screen produces less glare and reduces eye strain. In bright daylight, a light screen is often easier to read. That's why scheduled or system-synced dark mode works best.
On OLED and AMOLED screens, yes — black pixels emit no light and draw almost no power. On LCD screens the savings are minimal, but the eye-comfort benefit remains.
Install the free Turn Off the Lights extension, open Options → Night Mode, and enable the switch. Every website loads in your custom dark theme — even sites with no built-in dark mode.
Yes — completely free and open-source under GPLv2, with no ads, no tracking, and no account required. It has been trusted by millions of users since 2009.