SECURITY REPORT · EXTENSHI SCAN
Monochrome Mode | Grayscale web
Firefox extension·by Pedro S.
0
/ 100 SAFETY SCORE
CAUTION
Mostly fine, but a few things worth reviewing before you install.
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
Monochrome Mode | Grayscale web's safety score vs every other extension we've scanned
Globally
35%of extensions carry more risk
Riskier ←→ Safer
Ranked against 357,609 extensions
In Appearance
9%of appearance extensions carry more risk
Riskier ←→ Safer
Ranked against 15,881 appearance extensions
Findings
8
median 3Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
3
median 2Declared in manifest
Active users
14
median 4vs category median
Findings breakdown
Automated security signal · 8 distinct issues across 6 severities
8
distinct issues
detected
detected
Critical225%
High113%
Needs Review00%
Medium450%
Low113%
Info00%
Permissions requested
2 risky permissions of 3 total
2 high-risk permissions require attention
This extension requests 3 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
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Scan performed by extenshi.io · Aug 18, 2026
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