SECURITY REPORT · EXTENSHI SCAN
Web Component DevTools
Firefox extension·by Matsuuu
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
Web Component DevTools's safety score vs every other extension we've scanned
Globally
2%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Appearance
0%of appearance extensions carry more risk
Riskier ←→ Safer
Ranked against 17,915 appearance extensions
Findings
58
median 3Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
4
median 2Declared in manifest
Active users
918
median 3vs category median
Findings breakdown
Automated security signal · 58 distinct issues across 6 severities
58
distinct issues
detected
detected
Critical23%
High916%
Needs Review00%
Medium2747%
Low1119%
Info916%
Permissions requested
3 risky permissions of 4 total
1 critical permission require attention
This extension requests 4 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
Critical
Access to all websites
Can read and modify content on every website you visit
High
View open tabs
Can see URLs and titles of all open tabs
High
Developer tools
Can extend browser developer tools with custom panels
Medium
Add context menu items
Can add custom items to the right-click context menu
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Scan performed by extenshi.io · Aug 25, 2026
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