SECURITY REPORT · EXTENSHI SCAN
Highlighter for ChatGPT & Claude
Firefox extension·by dematrix
92
/ 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
Highlighter for ChatGPT & Claude's safety score vs every other extension we've scanned
Globally
67%of extensions carry more risk
Riskier ←→ Safer
Ranked against 397,225 extensions
In Appearance
31%of appearance extensions carry more risk
Riskier ←→ Safer
Ranked against 18,859 appearance extensions
Findings
7
median 3Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
5
median 2Declared in manifest
Active users
2
median 3vs category median
Findings breakdown
Automated security signal · 7 distinct issues across 6 severities
7
distinct issues
detected
detected
Critical00%
High00%
Needs Review00%
Medium343%
Low457%
Info00%
Permissions requested
5 permissions declared
No risky permissions
5 permissions requested — none are flagged as risky.
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Add context menu items
Can add custom items to the right-click context menu
Info
https://chatgpt.com/*
No additional information available.
Info
https://chat.openai.com/*
No additional information available.
Info
https://claude.ai/*
No additional information available.
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Scan performed by extenshi.io · Aug 10, 2026
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