SECURITY REPORT · EXTENSHI SCAN
YouTube Thumbnail Grabber
Firefox extension·by Anima
93
/ 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 Thumbnail Grabber's safety score vs every other extension we've scanned
Globally
69%of extensions carry more risk
Riskier ←→ Safer
Ranked against 402,581 extensions
In Games Entertainment
41%of games entertainment extensions carry more risk
Riskier ←→ Safer
Ranked against 9,480 games entertainment extensions
Findings
6
median 4Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
1
median 3Declared in manifest
Active users
43
median 4vs category median
Findings breakdown
Automated security signal · 6 distinct issues across 6 severities
6
distinct issues
detected
detected
Scanners reported 13 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical00%
High00%
Needs Review00%
Medium467%
Low233%
Info00%
Permissions requested
1 permission declared
No risky permissions
1 permission requested — none are flagged as risky.
Info
*://*.youtube.com/watch?v=*
No additional information available.
Are you the author of YouTube Thumbnail Grabber?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Add the badge to your README
Show YouTube Thumbnail Grabber's live security score on GitHub or in your docs
Scan performed by extenshi.io · Aug 25, 2026
Browser extensions made transparent.