SECURITY REPORT · EXTENSHI SCAN
Grids & Rulers
Firefox extension·by Jeremie Patonnier
0
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.
Likely abandonedsafety score reduced by 30 points
- No update in over 6 years
Why this matters
An unmaintained extension keeps whatever flaws it shipped with, and a listing with users but no owner is an attractive target to buy and repurpose.
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
Grids & Rulers's safety score vs every other extension we've scanned
Globally
58%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Web Development
37%of web development extensions carry more risk
Riskier ←→ Safer
Ranked against 14,329 web development extensions
Findings
8
median 4Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
3
median 3Declared in manifest
Active users
1066
median 3vs category median
Findings breakdown
Automated security signal · 8 distinct issues across 6 severities
8
distinct issues
detected
detected
Critical00%
High225%
Needs Review00%
Medium450%
Low225%
Info00%
Permissions requested
1 risky permission of 3 total
1 critical permission require attention
This extension requests 3 permissions in total. 1 of them grant broad capabilities that are worth a careful look.
Critical
Access to all websites
Can read and modify content on every website you visit
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Unlimited local storage
Can store large amounts of data locally without size limits
Are you the author of Grids & Rulers?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Add the badge to your README
Show Grids & Rulers's live security score on GitHub or in your docs
Scan performed by extenshi.io · Aug 9, 2026
Browser extensions made transparent.