SECURITY REPORT · EXTENSHI SCAN
Responsive Design Tester Pro
Firefox extension·by Burch
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
Responsive Design Tester Pro's safety score vs every other extension we've scanned
Globally
94.97%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
84.97%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
4
median 38Lower is safer
Risky permissions
0
median 1Critical + high perms
Total permissions
1
median 4All declared perms
Critical findings
0
median 2Severity = Critical
Findings breakdown
Automated security signal · 4 findings across 5 severities
4
findings
detected
detected
Critical00%
High00%
Medium250%
Low250%
Info00%
Permissions requested
1 permission declared
No risky permissions
1 permission requested — none are flagged as risky.
Medium
Access current tab
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Scan performed by extenshi.io · Jun 25, 2026· partial run (some scanners failed)
Browser extensions made transparent.