User JavaScript and CSS extension
Security at a glance
Describes the Firefox listing; other stores are scanned separately and can score differently. Automated estimate from our latest scan (malware, permissions, obfuscation) — not a security audit. Higher safety score is better.
See the full security reportFirefox listing ID: user-js-and-css
Permissions (8)
- View open tabs
- Execute scripts in pages
- Access all HTTP sites
Related extensions
Frequently asked questions
Is User JavaScript and CSS safe to use?
Our latest automated scan rates the Firefox listing of User JavaScript and CSS at 56/100 (elevated risk) — malware, permission and obfuscation checks combined. The full report lists every finding behind the number.
What permissions does User JavaScript and CSS require?
User JavaScript and CSS requests 8 permissions. The most significant: View open tabs, Execute scripts in pages, Access all HTTP sites. See the full breakdown in the security report.
Who develops User JavaScript and CSS?
User JavaScript and CSS is published by tenRabbits. Impersonators copy popular extension names, so always verify the developer line and listing id on the store page before installing.