Site CSS extension

Security at a glance

Some riskSafety score 79/1006 findings

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 report

Firefox listing ID: site-css

Permissions (3)

  • Access to all websites
  • Execute scripts in pages

Frequently asked questions

Is Site CSS safe to use?

Our latest automated scan rates the Firefox listing of Site CSS at 79/100 (some risk) — malware, permission and obfuscation checks combined. The full report lists every finding behind the number.

What permissions does Site CSS require?

Site CSS requests 3 permissions. The most significant: Access to all websites, Execute scripts in pages. See the full breakdown in the security report.

Who develops Site CSS?

Site CSS is published by twilligon. Impersonators copy popular extension names, so always verify the developer line and listing id on the store page before installing.