SECURITY REPORT · EXTENSHI SCAN
Do not close browser with last tab
Chrome extension·by Sebastian Blask
97
/ 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
Do not close browser with last tab's safety score vs every other extension we've scanned
Globally
85%of extensions carry more risk
Riskier ←→ Safer
Ranked against 397,380 extensions
In Productivity
93%of productivity extensions carry more risk
Riskier ←→ Safer
Ranked against 191,263 productivity extensions
Findings
2
median 16Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
2
median 3Declared in manifest
Active users
361
median 14vs category median
Findings breakdown
Automated security signal · 2 distinct issues across 6 severities
2
distinct issues
detected
detected
Critical00%
High00%
Needs Review00%
Medium150%
Low150%
Info00%
Permissions requested
2 permissions declared
No risky permissions
2 permissions requested — none are flagged as risky.
Medium
Store local data
Can save data locally in the browser for persistence
Low
Run in background
Can run scripts in the background when not actively in use
Are you the author of Do not close browser with last tab?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Add the badge to your README
Show Do not close browser with last tab's live security score on GitHub or in your docs
Scan performed by extenshi.io · Aug 12, 2026
Browser extensions made transparent.