Add custom JavaScript codes or styles to any page.

Custom Style Script - Firefox Add-on for JS and CSS
Custom Style Script is a Firefox add-on designed to customize the look and behavior of any webpage. It allows users to add custom JavaScript codes or Cascading Style Sheets (CSS) styles to any specific page or all pages. Users can disable or enable the add-on simply by clicking on the toolbar icon. Code items can be adjusted according to user's preference, with a validated JS or CSS code, even online JavaScript or CSS links may be added to any page.
Add-on stats
Manifest V2
Weekly download count: 43
Firefox on Android: Yes
Permissions:
- tabs
- storage
- <all_urls>
Size: 51.31K
Email: mi*****@yandex.com
URLs: Website
Full description: See detailed description
Ranking
Other platforms
Not available on Android
User reviews
Pros
- Works as intended
- Allows customization of websites
- Fixes layout issues on sites like Facebook
- Ability to block unwanted content
- No AJAX or fetch requests made
Cons
- User experience issues
- Occasionally stops working after some time
- Lack of alerts for accidental deletions
- Does not support reading local files
- CSS changes may not persist
Most mentioned
- Works as expected
- Useful for fixing website layouts
- User experience could be improved
- Plugins sometimes fail or stop after a short time
- Ability to customize websites effectively
User reviews
by 退出中共邪教党团队避疫, 2025-02-10
It works as expected, I even checked the source code just to be safe. It doesn't make any ajax or fetch requests
by Esat, 2024-12-14
by Shadow, 2024-10-05
Add-on safety
Risk impact
Custom Style Script requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
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Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of Custom Style Script. Use it at your own risk.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
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