SECURITY REPORT · EXTENSHI SCAN
YouTube Fullscreen (but in a window)
Firefox extension·by from
0
/ 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
YouTube Fullscreen (but in a window)'s safety score vs every other extension we've scanned
Globally
82%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Photos Music Videos
61%of photos music videos extensions carry more risk
Riskier ←→ Safer
Ranked against 10,146 photos music videos extensions
Findings
2
median 4Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
1
median 3Declared in manifest
Active users
1
median 6vs category median
Findings breakdown
Automated security signal · 2 distinct issues across 6 severities
2
distinct issues
detected
detected
Critical00%
High150%
Needs Review00%
Medium00%
Low150%
Info00%
Permissions requested
1 permission declared
No risky permissions
1 permission requested — none are flagged as risky.
Info
*://www.youtube.com/*
No additional information available.
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Scan performed by extenshi.io · Aug 25, 2026
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