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Automatic Material Dark-Mode for YouTube

A low-tech solution to a high-tech problem! Automatically clicks YouTube's "Dark Mode" button if dark mode isn't already active.

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joshcangit 2021/04/05
Bad YouTube breakage with user script Not quite sure how to edit this to fix it. YouTube updated so now the Appearance menu has 3 clickable items. First item is now called "Use device theme". ...
afendin 2020/12/01
OK Just figured out that this piece of code document.getElementsByTagName("html")[0].setAttribute("dark", "true"); makes the deal. And you can use: document.getElementsByTagName("html")[0].r...
Dexter04 2020/06/17
OK Dont work for me on Chrome!! i have a months that the script dont work for me, i use it on adguard windows version as script, but i notice the is not working for some reason for few months ago!
Zeval 2019/10/20
Good I'm glad someone did it Thanks for putting in the effort to make this a reality, I was about to do it because I noticed YouTube fails to remember the dark mode setting. Just an observation in ca...
arfycat 2019/10/02
THANK YOU for finding a way! I've tried, myself, to decipher the youtube DOM objects and do a .click() on the right ones, and I never got it to work. Looking briefly through your code, the thou...
Anonymer-User 2019/04/17
OK Doesn't work sometimes Sporadically it switches even to light mode when a opening a new youtube video when the dark mode was set manually before, please fix this.
wadawada 2019/04/07
Good Automatic expand subscription list? Your script is really nice Is it possible to make auto expand subscription list inside the three bar menu on top left because as subscriptions grow, it takes ...
bastinte 2018/12/13
Good Any language always on YouTube Hello. Sorry for my English. It is possible to implement automatic switching to the desired language on YouTube?
Valentindra 2018/10/29
Can you do a script, that turns the dark mode on and off time based? That would be cool
Ebb 2018/03/21
Last: SteveJobzniakAuthor 2018/03/24
Good New Design The script doesn't work with the new design. There is a new button at the top-right corner of youtube. I've been seeing this for a while. I could go back to previous layout by clearing ...
Patrick Kempf 2018/03/15
Last: SteveJobzniakAuthor 2018/03/23
Good Thank you! Thank you for this. It's driving me crazy that YouTube always "forgets" this setting. Also "Autoplay" gets automatically activated.
BtL 2018/02/16
Last: BtL 2018/02/23
Specific times I would love the ability to set specific times when dark mode should be activated. During the day I prefer classic white youtube. Can you do that? (:
omperus 2017/11/15
Last: SteveJobzniakAuthor 2017/11/17
Good Broken with FF57 + Greasmonkey 4.0 Script doesn't seem to work anymore with the new version of firefox and greasemonkey 4, hope it can be updated as its very useful/
SteveJobzniakAuthor 2017/09/10
Last: SteveJobzniakAuthor 2017/09/21
Good Should I make it auto-select the Search field afterwards? (Update: Done! See v1.3.) After this script has auto-enabled dark mode, the "dark mode" settings panel stays open. So you need to manually...

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