SECURITY REPORT · EXTENSHI SCAN
Custom CSS
Chrome extension·by anzhenko.sergei
75
/ 100 SAFETY SCORE
CAUTION
Mostly fine, but a few things worth reviewing before you install.
Automated analysis of publicly available code — not a professional security audit. It may produce false positives and does not prove an extension is unsafe or safe. Treat it as one signal among many. Disclaimer · Report an issue
How it ranks
Custom CSS's safety score vs every other extension we've scanned
Globally
24%of extensions carry more risk
Riskier ←→ Safer
Ranked against 397,225 extensions
In Productivity
32%of productivity extensions carry more risk
Riskier ←→ Safer
Ranked against 191,248 productivity extensions
Findings
12
median 16Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
2
median 3Declared in manifest
Active users
14
median 14vs category median
Findings breakdown
Automated security signal · 12 distinct issues across 6 severities
12
distinct issues
detected
detected
Critical18%
High00%
Needs Review00%
Medium1083%
Low18%
Info00%
Permissions requested
2 permissions declared
No risky permissions
2 permissions requested — none are flagged as risky.
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Store local data
Can save data locally in the browser for persistence
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Scan performed by extenshi.io · Aug 12, 2026
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