Merlin
CSS Override

CSS Override

Add your own custom CSS styles to any webpage

What is CSS Override?
'CSS Override' is a Firefox add-on that allows users to add custom CSS to any webpage. Used by toggling on/off or opening up the style editor for the current site. Once custom CSS is inputted and saved, it is implemented when custom styles are toggled on for the page. Perfect for users seeking a trustworthy, open-source alternative to Stylelish.
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Merlin
Stats
Users: 1,702 ▲ 21
Rating: 4.39 (18)
Version: 1.0 (Last updated: 2019-10-08)
Creation date: 2019-10-07
Weekly download count: 80
Firefox on Android: No
Risk impact: High risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
Permissions:
  • activeTab
  • tabs
  • storage
  • <all_urls>
Size: 20.50K
Stats date:

Chrome-Stats Rank

# 2318 ▲ 2
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Other platforms

Not available on Chrome
Not available on Edge
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Merlin
Summary
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Tired of blindingly white web pages?

This extension allows you to add your own custom css styles to any webpage. Hit the extension icon to toggle custom styling on/ off or to open up the style editor for the site you are currently on.

Paste your custom CSS into the style editor and hit save. When you toggle custom styles on for the page your custom css should now be shown.

I made this extension after Stylish got caught doing some shady stuff and wanted to use something I could trust. This project is open source on github (see link in sidebar).

User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Simple to use
  • Works without any problems
  • Fast
Cons
  • Lack of documentation or hints on how to use it
  • Stopped working for some users
Most mentioned
  • Simple and fast
  • Does what it says on the tin
  • Works without any problems
Recent reviews
by Biche, 2024-03-30
by Biche, 2024-03-30
does what it says on the tin.
by Hopeless Solace, 2024-03-29
View all user reviews
Safety
Risk impact

CSS Override is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install CSS Override if you trust the publisher.

Risk likelihood

CSS Override has earned a fairly good reputation and likely can be trusted.

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Screenshots
CSS Override CSS Override CSS Override CSS Override