SECURITY REPORT · EXTENSHI SCAN
99Tools: Web Developer Toolkit
Firefox extension·by 99Tools
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
99Tools: Web Developer Toolkit's safety score vs every other extension we've scanned
Globally
46%of extensions carry more risk
Riskier ←→ Safer
Ranked against 120,727 extensions
In Web Development
39%of web development extensions carry more risk
Riskier ←→ Safer
Ranked against 10,188 web development extensions
Findings
6
median 4Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
0
median 3Declared in manifest
Active users
1
median 3vs category median
Findings breakdown
Automated security signal · 6 findings across 5 severities
6
findings
detected
detected
Critical00%
High00%
Medium467%
Low233%
Info00%
Permissions requested
0 permissions declared
No permissions requested
This extension doesn't request any browser permissions. That's unusually clean.
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Scan performed by extenshi.io · Jun 25, 2026
Browser extensions made transparent.