The entire page will be fading to dark, so you can watch the videos as if you were in the cinema. Works for YouTube™ and Beyond.

With a single click on the lamp button, the page will fade to dark. And automatically focus on the video. By clicking on it again, the page will return to normal.

Turn Off the Lights is a lightweight and useful add-in designed for a more comfortable watching experience. It works for all known video sites such as YouTube, Vimeo, Dailymotion,, Hulu, Metacafe, Youku, etc. Not only this but these extensions are compatible with Google Chrome, Apple Safari, Mozilla Firefox, Opera, Microsoft Edge, Maxthon and Yandex web browsers.

A few great features in this browser extension:
+ Turn the lights back on, by clicking on the black layer
+ Supports 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 videos in 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
+ Option to turn on/off the fade in and fade out effects
+ Custom colors
+ Option for Flash Detection
+ Option to Show Dimness Level Bar
+ Option for Eye Protection for when it's night, with whitelist/blacklist filter
+ Option for atmosphere lighting that shows a glow around the video player
+ Option to show the dark layer on the top of the window
+ Option for 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 Camera Motion
+ Option for Speech Recognition
+ 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, with whitelist/blacklist filter
Timestamp: 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.
+ and more...

Don't forget to like & Follow Us:

Feel free to contact us if there is any problem or suggestion.
Note: YouTube is a trademark of Google Inc. Use of this trademark is subject to Google Permissions.

What’s New

Version 4.1.3

+ Translation update
+ Improvement long-press feature to activate Night Mode
+ Fixed the lamp button action that did not add the dark layer for new Safari users

If you have any feedback or questions, we’d love to hear from you! Turn Off the Lights offers free support. You can reach us on Facebook TurnOfftheLight, or on twitter at @turnoffthelight. You can also read our User Guides or browse our FAQs on

Ratings and Reviews

3.3 out of 5
57 Ratings

57 Ratings

JD_Spurs ,

This is not a browser night mode

OK, So it should be pretty apparent by the images but i downloaded it and tried it just to confirm my suspicions.

This does nothing to the look of your browser. At all.

It does however utilize what I would imagine is some CSS trickery to change the design of the webpage you’re looking at and darken the colors of the website. I guess this would be better described as a webpage night-mode simulator, as it simulates a night mode for the individual site. In my book, a browser night mode doesn’t change the website at all, but changes the browser; ie the grey at the top, the tabs bar, the favorite menu, the bookmarks drawer… all the pieces that are part of the browser running locally, not any of the content it has requested.

I can see how some people might want this, but this is definitely NOT a browser dark mode.

Developer Response ,

Hi there,

The Night Mode feature works only in the website content because this is a Safari extension. Default is this feature disabled, and the user (such as you) can enable this in the Options page. And it explains also on this page that this only changes the website style (with the custom CSS settings for text, hyperlink, and background). However, in another modern web browser such as Firefox the 'Turn Off the Lights' Firefox extension can dim the User Interface of this web browser app. So, everything is dark with a single click on the lamp button. From the toolbar to the buttons.
But in Apple Safari that is not possible with the API limit.

If you need any help or have a question or for feedback, don't hesitate to contact us on this support form:
We are happy to help you over there.


Safety Always ,

Not For Me

I tried everything I could. I read all the directions, and I do mean ALL! There are quite a few. I didn't like the results of what I tried. I'm using macOS Catalina and my browser is Safari. I tried to undo everything but turning on & off the light but I never even saw a light on any page with a video. I clicked on support but consistently got only a page offering to allow me to download the App for Google Chrome. When I finally got a form to fill out and send, I did, but didn't get an answer and never found the form again. Occasionally there was a large lamp on some of the pages with directions on the different uses. When I clicked on that lamp I ended up on the same offer to download the App for Google Chrome. I gave up and uninstalled the App. At first I liked it, but just turning off and on the lights was not

Developer Response ,

Hi Peter,

Sorry you have had this bad experience.

I support always my users and you will always get a reply back if you need any help. And I did send you an email back to your email:
Peter Stanford "", that within the 7 hours.
In that email, I provide you the steps on how you can enable the Safari extension in your Safari web browser. That with the video tutorial link on how to set it up in your Safari web browser. Also, the gray lamp button is only visible in the Safari toolbar and you can change the location of this icon (that on the right or left from your address bar).

If you need any help, the contact form is visible at:
On the bottom of the web page you see a clear button contact us by email.


thegatheringvn ,

Can't say thank enough to developers.

I often read a lot of document on screen and this extension literally saved my eyes. I apply Night Mode on select websites that I use the most. Pro tip: enable "Make the page go dark or light by long-pressing the current web page" so you can long click and switch modes magically. Really don't understand the low ratings and the whiners.


Stefan Van Damme
39.8 MB

macOS 10.12 or later, 64-bit processor


English, Arabic, Catalan, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Spanish, Swedish, Thai, Turkish, Ukrainian, Vietnamese

Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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