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Turn-Off-the-Lights-browser-extension Turn Off the Lights Browser extension for Google Chrome, Firefox, Opera, Safari, Naver Whale, Yandex, Samsung Internet, and Microsoft Edge.
#chrome-extension #css #dark-mode #edge-extension #firefox-extension #free
View Repository on GitHub ↗ REPOSITORY OVERVIEW Live repository statistics ★ 210 Stars
⑂ 74 Forks
◯ 0 Open issues
◉ 210 Watchers
87 /100
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README preview Turn Off the Lights Browser Extension
Turn Off the Lights is a popular browser extension that works on all major web browsers such as Google Chrome, Firefox, Opera, Safari, Yandex, Maxthon, Brave, Vivaldi, Cốc Cốc, Samsung Internet, Naver Whale, and Microsoft Edge.
Project
Using Turn Off the Lights to dims the web page and reduces the eye strain caused by the bright screen. And it will highlight the video player on that web page such as on YouTube.
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Please use and enjoy it, and if you can make a donation of any amount, I'd appreciate it immensely
Features
Turn the lights back on, by clicking on it
Support multiple video sites: YouTube, HTML5 video,... and more
Customize your YouTube:
Auto HD: Set videos to play in HD automatically. Users can select from highres > 8K > 5K> 4K > 1080p > 720p > 480p > 360p > 240p > 144p > default
Auto Wide: Automatically plays the video on the widest mode
,... and more
Easter Eggs:
Shortcut key: T -> Do you like a real movie theater feeling?
Option to make the screen dark when the user clicks on the play button
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Chrome extension
30 /100 healthHas homepage Archived
GPL-2.0 #accessibility #browser-extension #chrome-extension #chromium-extension
⑂ 27 forks ◯ 0 issues Updated Jun 2, 2026
Project homepage ↗
Option to turn on/off the fade-in and fade-out effects
Custom colors
Option to Flash Detection
Option to Show Dimness Level Bar
Option Eye Protection for when it's night. And with a whitelist/blacklist filter
Option atmosphere lighting that shows a glow around the video player
Option to show the dark layer on the top of the window Options to shortcut keys:
Ctrl + Shift + L to toggle the lights
Alt + F8 to restore the default opacity value
Alt + F9 to save the current opacity value
Alt + F10 to enable/disable the Eye Protection feature
Alt + (arrow up) to increase the opacity
Alt + (arrow down) to decrease the opacity
Alt + * to toggle the lights on all open tabs
Option for Mouse Wheel Volume Control for each HTML5 video player
Option to add a filter to the current HTML5 video player (grayscale, sepia, invert, contrast, saturate, hue rotation, and brightness)
Option to show the Audio Visualization effect on top of the current HTML5 video (Blocks, Frequency, and Music Tunnel)
Option to loop the current HTML5 video player Option to place the Night Mode switch to toggle YouTube in black or white theme. And with a whitelist/blacklist filter
Time stamp: Activate the Night Mode within the chosen time
Blackout: Dims the web page and activates the Night Mode
Option to stop YouTube and HTML5 videos from automatically playing.
Installation
Loading it in Chrome:
Open your Google Chrome web browser, browse to chrome://extensions
If you have already Turn Off the Lights Chrome extension installed, disable it
Check Developer mode at the top of the Extensions page
Click Load unpacked extension...
Choose the sub-directory src (where manifest.json resides)
STABLE Channel: The browser extension is available in the following stores:
BETA Channel: 
