Customizable Dark Theme for YouTube

The YouTube Dark Theme extension for Firefox offers users a highly customizable dark interface for YouTube. Built on the native dark theme, it enables a lightweight experience compared to traditional themes. Users can easily toggle between light and dark modes using an action button, and they can schedule the theme to activate during specific times. Additionally, the extension allows for customization of the default color scheme and the option to inject custom CSS for further personalization, such as modifying font styles.

This extension operates by altering a global cookie to switch themes and injects a lightweight script to adjust the color scheme. Unlike other extensions, it utilizes YouTube's native dark theme, ensuring efficient performance without resetting the default theme. The extension is designed with user privacy in mind, as it does not transmit any data to external servers.

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App specs

  • License

    Subscription

  • Version

    0.4.1

  • Latest update

  • Platform

    firefox

  • Downloads

    6

    Last month's downloads

    • 6
  • Size

    94.48 KB

  • Developer

Program available in other languages



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Laws concerning the use of this software vary from country to country. We do not encourage or condone the use of this program if it is in violation of these laws.
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Is YouTube Dark Theme safe?

100/100

Score result: Clean

This file passed a comprehensive security scan using VirusTotal technology. It is safe to download.

  • Virus free
  • Spyware free
  • Malware free
  • Verified by Security Partners

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Scan Info

Last scan
Sunday, September 21, 2025
Scan provider
VirusTotal · Full report

File Integrity

File
0.4.1.xpi
SHA256
a92a6f8d171da482a3d51de6ecad4dcf89be3a7f718eba6c4afe26221391d9bb
SHA1
8cffdc47debe4d652c3bce0e5e945ba18c77ed81

Softonic security commitment

YouTube Dark Theme has been thoroughly scanned by our advanced security systems and verified by industry-leading partners. This file comes from the official developer and has passed all our security checks, showing no signs of viruses, malware, or spyware. For more information, visit our Security and Trust Center