SECURITY REPORT · EXTENSHI SCAN
Thumbnail Preview - YouTube Thumbnail Testing
Chrome extension·by Thumbnail Preview
0
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.
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
Thumbnail Preview - YouTube Thumbnail Testing's safety score vs every other extension we've scanned
Globally
5%of extensions carry more risk
Riskier ←→ Safer
Ranked against 120,711 extensions
In Productivity
11%of productivity extensions carry more risk
Riskier ←→ Safer
Ranked against 25,973 productivity extensions
Findings
25
median 10Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
2
median 3Declared in manifest
Active users
761
median 23vs category median
Findings breakdown
Automated security signal · 25 findings across 5 severities
25
findings
detected
detected
Critical14%
High936%
Medium1456%
Low14%
Info00%
Permissions requested
2 permissions declared
No risky permissions
2 permissions requested — none are flagged as risky.
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Unlimited local storage
Can store large amounts of data locally without size limits
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Scan performed by extenshi.io · Jun 25, 2026
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