extenshi.io
SECURITY REPORT · EXTENSHI SCAN

Master Cleaner

Edge extension·by Master Cleaner
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

Master Cleaner's safety score vs every other extension we've scanned
Globally
25%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 397,380 extensions
In Productivity
41%of productivity extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 7,222 productivity extensions
Findings
17
median 17Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
10
median 3Declared in manifest
Active users
2994
median 105vs category median

Findings breakdown

Automated security signal · 17 distinct issues across 6 severities
17
distinct issues
detected

Permissions requested

4 risky permissions of 10 total
4 high-risk permissions require attention
This extension requests 10 permissions in total. 4 of them grant broad capabilities that are worth a careful look.
High
Delete browsing data

Can remove browsing history, cookies, cache, and other browsing data

High
Access browser cookies

Can read and modify cookies, potentially accessing login sessions

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
Add context menu items

Can add custom items to the right-click context menu

Medium
Show notifications

Can display desktop notifications outside the browser

Medium
Store local data

Can save data locally in the browser for persistence

Low
Schedule tasks

Can schedule periodic background tasks

Low
Run in background

Can run scripts in the background when not actively in use

Low
Block network requests (declarative)

Can block or redirect network requests using predefined rules without seeing content

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Scan performed by extenshi.io · Aug 20, 2026
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