SECURITY REPORT · EXTENSHI SCAN
Appearance Custom - Dynamic Themes
Firefox extension·by Goodwin
96
/ 100 SAFETY SCORE
EXCELLENT
Looks clean. No meaningful risks detected in this scan.
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
Appearance Custom - Dynamic Themes's safety score vs every other extension we've scanned
Globally
80%of extensions carry more risk
Riskier ←→ Safer
Ranked against 409,539 extensions
In Photos Music Videos
59%of photos music videos extensions carry more risk
Riskier ←→ Safer
Ranked against 11,181 photos music videos extensions
Findings
3
median 4Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
3
median 3Declared in manifest
Active users
1
median 6vs category median
Findings breakdown
Automated security signal · 3 distinct issues across 6 severities
3
distinct issues
detected
detected
Scanners reported 4 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical00%
High00%
Needs Review00%
Medium267%
Low133%
Info00%
Permissions requested
3 permissions declared
No risky permissions
3 permissions requested — none are flagged as risky.
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Low
Customize theme
Can change the browser theme appearance
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Scan performed by extenshi.io · Jul 25, 2026
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