As featured in
Built-in Option
How to Enable Stack Overflow's Own Dark Mode
Stack Overflow includes a free built-in dark mode. Here is how to turn it on — then see below for a more customizable alternative.
On desktop (stackoverflow.com)
Open Settings
On stackoverflow.com, click your avatar in the top bar, then open Settings.
Pick the Dark theme
Go to Preferences → Interface and set Theme to Dark — every page switches instantly.
On iPhone & Android app
Open the menu
On the Stack Overflow mobile site, tap your avatar and open Settings.
Set Theme to Dark
Under Preferences → Interface, choose Dark — the setting syncs with your account.
Limitation: Stack Overflow's dark mode is a single fixed theme with no scheduling or custom colors. Turn Off the Lights lets you pick your own dark colors and automate switching on Stack Overflow and every other site.
Stack Overflow Dark Mode Features
Everything You Need for the Best Stack Overflow Dark Mode
Turn Off the Lights is not just a simple Stack Overflow dark mode. It is a complete browser enhancement built to give you full control over how every website looks in the dark.
Consistent Stack Overflow Dark Theme
Apply a uniform dark theme to stackoverflow.com with your chosen colors — not just the fixed default theme.
Auto-Schedule Day/Night Switch
Set sunrise/sunset switching or custom hours. Stack Overflow dark mode turns on and off automatically without any manual intervention.
One Theme for All Websites
The same dark theme applies to every website — Stack Overflow, Instagram Web, Messenger, YouTube, Reddit, and beyond.
Choose Your Own Dark Colors
Pick background, text, link, button, and border colors independently. True black for OLED or warm dark for reading comfort.
Smart Detection
Turn Off the Lights detects when Stack Overflow has already applied its own dark mode and can skip double-layering automatically.
No Stack Overflow Data Access
The extension applies visual changes only. It does not read, store, or transmit any Stack Overflow content or account data.
How It Works
Enable Stack Overflow Dark Mode 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 Chrome Web Store, Firefox Add-ons, Edge Add-ons, or Opera Add-ons.
Open stackoverflow.com
Navigate to stackoverflow.com in your browser with the extension installed.
Enable Night Mode
Open Options → Night Mode tab and toggle the Night Mode switch on.
Set Schedule & Colors
Choose custom dark colors and set an automatic day/night schedule so Stack Overflow dark mode switches without any manual effort.
Browser Support
One Stack Overflow Dark Mode 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 — Stack Overflow Dark Mode
FAQ
Frequently Asked Questions About Stack Overflow Dark Mode
Stack Overflow has a built-in dark mode in its settings. For a fully customizable alternative with custom colors and auto-scheduling, install Turn Off the Lights and enable Night Mode in Options.
Yes — stackoverflow.com has a Dark theme in Settings → Preferences → Interface. For custom colors and automatic scheduling, use the free Turn Off the Lights extension.
Stack Overflow's dark mode has fixed colors and requires manual toggling. Turn Off the Lights offers custom colors, automatic scheduling, and the same dark theme on every other website you visit.
Turn Off the Lights is a browser extension for desktop browsers. For mobile, Stack Overflow's own app dark mode is the recommended option.
On OLED screens, true black pixels use less power. A true-black custom theme from Turn Off the Lights Night Mode saves more than any fixed dark-grey theme.
Reload the page or update the Stack Overflow app, then check Stack Overflow's theme or display settings. If dark mode is missing or too limited, the Turn Off the Lights extension applies a dark theme to Stack Overflow in any desktop browser.
Why Turn Off the Lights
The Most Complete Stack Overflow Dark Mode Solution Available
While Stack Overflow does offer a built-in dark mode, many users searching for Stack Overflow dark mode want more control — custom colors, automatic scheduling, and a consistent dark experience that extends beyond Stack Overflow to every other website.
Stack Overflow Dark Mode with Custom Colors
Stack Overflow's built-in dark mode uses a fixed grey-blue color scheme. Turn Off the Lights lets you choose your own background color — pure black for OLED, warm dark for eye comfort, or any shade you prefer. Apply the same custom theme consistently across Stack Overflow and all other sites.
Automatic Stack Overflow Dark Mode Scheduling
Stack Overflow's built-in dark mode uses a fixed color scheme. Turn Off the Lights lets you choose your own background color — pure black for OLED, warm dark for eye comfort, or any shade you prefer. Apply the same custom theme consistently across Stack Overflow and all other sites.
One Extension, Dark Mode Everywhere
Stack Overflow is just one website. Turn Off the Lights applies the same Night Mode theme to every website you visit — Messenger, Instagram Web, WhatsApp Web, YouTube, Reddit, Wikipedia, and any other site — giving you a unified dark experience across your entire browser.
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.
Dark Mode Guides
More Dark Mode Guides
Get the same dark experience on your other favorite websites and browsers: