SECURITY REPORT · EXTENSHI SCAN
Qiita Rainbow Header
Firefox extension·by yamadashy
97
/ 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
Qiita Rainbow Header's safety score vs every other extension we've scanned
Globally
83%of extensions carry more risk
Riskier ←→ Safer
Ranked against 409,539 extensions
In Appearance
58%of appearance extensions carry more risk
Riskier ←→ Safer
Ranked against 18,944 appearance extensions
Findings
3
median 3Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
2
median 2Declared in manifest
Active users
0
median 3vs category median
Findings breakdown
Automated security signal · 3 distinct issues across 6 severities
3
distinct issues
detected
detected
Critical00%
High00%
Needs Review00%
Medium133%
Low267%
Info00%
Permissions requested
1 risky permission of 2 total
1 high-risk permission require attention
This extension requests 2 permissions in total. 1 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
Info
https://qiita.com/*
No additional information available.
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Scan performed by extenshi.io · Aug 24, 2026
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