SECURITY REPORT · EXTENSHI SCAN
Return Youtube UI
Firefox extension·by 42null
90
/ 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
Return Youtube UI's safety score vs every other extension we've scanned
Globally
64%of extensions carry more risk
Riskier ←→ Safer
Ranked against 415,560 extensions
In Photos Music Videos
41%of photos music videos extensions carry more risk
Riskier ←→ Safer
Ranked against 11,259 photos music videos extensions
Findings
29
median 5Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
4
median 3Declared in manifest
Active users
313
median 6vs category median
Findings breakdown
Automated security signal · 29 distinct issues across 6 severities
29
distinct issues
detected
detected
Critical00%
High13%
Needs Review00%
Medium2690%
Low27%
Info00%
Permissions requested
2 risky permissions of 4 total
2 high-risk permissions require attention
This extension requests 4 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
High
Execute scripts in pages
Can inject and execute JavaScript code in web pages
High
View open tabs
Can see URLs and titles of all open tabs
Medium
Store local data
Can save data locally in the browser for persistence
Info
*://*.youtube.com/*
No additional information available.
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Scan performed by extenshi.io · Oct 21, 2026
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