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Preview of FireCSS

FireCSS by derivia

Save custom CSS to webpages

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Extension popup for custom css adding.
About this extension
This Firefox extension lets you easily apply custom CSS to any webpage. Simply enter a URL (with wildcard support) and your CSS code, and the extension will inject the styles into the active tab. Perfect for customizing the appearance of websites or testing CSS in real-time.
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This add-on needs to:

  • Access browser tabs
  • Access your data for all websites
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Version
1.3.1
Size
29.13 KB
Last updated
7 days ago (Jan 8, 2025)
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License
MIT License
Version History
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Release notes for 1.3.1
New icons!
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