SECURITY REPORT · EXTENSHI SCAN
Headmaster — HTTP Header Editor
Chrome extension
0
/ 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
Headmaster — HTTP Header Editor's safety score vs every other extension we've scanned
Globally
63%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Productivity
77%of productivity extensions carry more risk
Riskier ←→ Safer
Ranked against 177,133 productivity extensions
Findings
7
median 16Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
3
median 3Declared in manifest
Active users
15
median 14vs category median
Findings breakdown
Automated security signal · 7 distinct issues across 6 severities
7
distinct issues
detected
detected
Critical00%
High00%
Needs Review00%
Medium571%
Low229%
Info00%
Permissions requested
3 permissions declared
No risky permissions
3 permissions requested — none are flagged as risky.
Medium
Block requests with host access
Can block or redirect network requests and requires host permissions
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
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Scan performed by extenshi.io · Aug 21, 2026
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