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Feature
Every Way to Tune Your Dark Theme
From pure-black OLED themes to soft warm greys — you control exactly how dark dark mode gets.
Custom Background Color
Pick any background color — true black for OLED screens, warm dark tones for eye comfort, or anything in between.
Custom Text & Link Colors
Set your own text and hyperlink colors so contrast stays comfortable and readable on your dark background.
Adjustable Dim Layer
The signature lamp feature dims the page to any opacity you choose — slide from a light veil to near-black.
Eye Protection Mode
A dedicated Eye Protection option applies a comfortable, eye-friendly theme instantly — no manual color picking needed.
No Flash of White
Night Mode applies before the page renders, so you never see a bright flash followed by a dark repaint.
Fully Private
All settings live locally in your browser. Nothing is sent to any server — ever.
Why Brightness Control Matters in Dark Mode
A badly tuned dark mode is worse than none — grey text on grey backgrounds, or pitch black pages that feel like a cave. Real eye comfort comes from controlling both: the darkness of the background and the contrast of the text on it.
Two Tools, One Extension
Turn Off the Lights gives you two complementary controls. Night Mode converts each site to your custom dark theme — background, text, and link colors you choose. The dim layer is its famous lamp feature: click the lamp and the whole page fades to a translucent dark overlay at whatever opacity you set — perfect for watching videos.
Ready-Made Themes Included
Don't want to pick colors? The Night Mode gallery includes ready-made dark and light themes — midnight blue, forest, warm sepia and more — apply one and your whole browser follows it.
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.
How It Works
Get 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.
Customize Your Dark Theme
Pick your background, text, and link colors — or set an automatic schedule. Every website now loads dark.
FAQ
FAQ — Dark Mode Brightness Control
Yes — Night Mode lets you choose any background color, from true black to soft dark grey, plus custom text and link colors for the right contrast.
Yes — the signature lamp feature overlays a dimming layer at adjustable opacity, so you can dim any page without converting its colors.
Yes — a built-in theme gallery offers dark, light, and seasonal themes you can apply in one click.
Yes — completely free and open-source, with no ads, no tracking, and no account required.
Dark Mode Guides
More Dark Mode Guides
Explore more dark mode guides and features: