SECURITY REPORT · EXTENSHI SCAN
FontStash
Chrome extension·by simmuji
0
/ 100 SAFETY SCORE
CAUTION
Mostly fine, but a few things worth reviewing before you install.
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
FontStash's safety score vs every other extension we've scanned
Globally
27%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Productivity
36%of productivity extensions carry more risk
Riskier ←→ Safer
Ranked against 177,133 productivity extensions
Findings
47
median 16Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
6
median 3Declared in manifest
Active users
4
median 14vs category median
Findings breakdown
Automated security signal · 47 distinct issues across 6 severities
47
distinct issues
detected
detected
Critical12%
High12%
Needs Review00%
Medium4494%
Low12%
Info00%
Permissions requested
2 risky permissions of 6 total
2 high-risk permissions require attention
This extension requests 6 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
High
Execute scripts in pages
Can inject and execute JavaScript code in web pages
High
View open tabs
Can see URLs and titles of all open tabs
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Unlimited local storage
Can store large amounts of data locally without size limits
Low
Use side panel
Can display content in the browser side panel
Are you the author of FontStash?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Add the badge to your README
Show FontStash's live security score on GitHub or in your docs
Scan performed by extenshi.io · Aug 18, 2026
Browser extensions made transparent.