SECURITY REPORT · EXTENSHI SCAN
Simple open html file button
Firefox extension·by Siarhei Kuzeyeu
96
/ 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
Simple open html file button's safety score vs every other extension we've scanned
Globally
86%of extensions carry more risk
Riskier ←→ Safer
Ranked against 415,874 extensions
In Appearance
70%of appearance extensions carry more risk
Riskier ←→ Safer
Ranked against 19,041 appearance extensions
Findings
3
median 5Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
1
median 2Declared in manifest
Active users
267
median 3vs category median
Findings breakdown
Automated security signal · 3 distinct issues across 6 severities
3
distinct issues
detected
detected
Critical00%
High00%
Needs Review00%
Medium267%
Low133%
Info00%
Permissions requested
1 permission declared
No risky permissions
1 permission requested — none are flagged as risky.
Medium
Store local data
Can save data locally in the browser for persistence
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Scan performed by extenshi.io · Aug 24, 2026
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