
CSS/JS Inject by Freiholtz
Inject your custom CSS/JS to any page. WARNING: adding styling and script to a page can break its functionality and make it unsafe and break terms so use on your own risk and with good judgment preferably on your own sites.
You'll need Firefox to use this extension
Extension Metadata
Screenshots


About this extension
I could not find any newer injector so I made this with AI. The latest version adds ability to overview all sites where you have injections and activate/deactivate them. So you eg. can't lock yourself out from a site... like I did 🤦🏻♂️😂.
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This add-on needs to:
- Access browser tabs
- Access your data for all web sites
More information
- Version
- 0.1.0
- Size
- 19.21 kB
- Last updated
- 18 days ago (6 Feb 2025)
- Related Categories
- Licence
- MIT Licence
- Version History
- Tags
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Release notes for 0.1.0
Config page for the extension and ability to deactivate/activate injections per site.
- Enable/disable injected code for specific domains
- Dark mode support for the extension UI
- Real-time status indicators (✅ active, 🛑 inactive)
- Configuration page to manage all sites with injected code
- Responsive popup interface with:
- Quick access to configuration
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