SECURITY REPORT · EXTENSHI SCAN
Replacer
Firefox extension·by Dark Reader Ltd
75
/ 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
Replacer's safety score vs every other extension we've scanned
Globally
25%of extensions carry more risk
Riskier ←→ Safer
Ranked against 401,999 extensions
In Social & Communication
12%of social & communication extensions carry more risk
Riskier ←→ Safer
Ranked against 13,639 social & communication extensions
Findings
12
median 5Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
4
median 3Declared in manifest
Active users
67
median 3vs category median
Findings breakdown
Automated security signal · 12 distinct issues across 6 severities
12
distinct issues
detected
detected
Critical18%
High217%
Needs Review00%
Medium758%
Low18%
Info18%
Permissions requested
2 risky permissions of 4 total
1 critical permission require attention
This extension requests 4 permissions in total. 2 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
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
Unlimited local storage
Can store large amounts of data locally without size limits
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Scan performed by extenshi.io · Aug 24, 2026
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