SECURITY REPORT · EXTENSHI SCAN
Manga Downloader V3
Firefox extension·by Thuy Phan
83
/ 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
Manga Downloader V3's safety score vs every other extension we've scanned
Globally
35%of extensions carry more risk
Riskier ←→ Safer
Ranked against 415,885 extensions
In Download Management
38%of download management extensions carry more risk
Riskier ←→ Safer
Ranked against 4,894 download management extensions
Findings
13
median 10Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
5
median 4Declared in manifest
Active users
2
median 10vs category median
Findings breakdown
Automated security signal · 13 distinct issues across 6 severities
13
distinct issues
detected
detected
Critical18%
High215%
Needs Review00%
Medium969%
Low18%
Info00%
Permissions requested
3 risky permissions of 5 total
1 critical permission require attention
This extension requests 5 permissions in total. 3 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
Manage downloads
Can initiate downloads and access your download history
High
View open tabs
Can see URLs and titles of all open tabs
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Store local data
Can save data locally in the browser for persistence
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Scan performed by extenshi.io · Oct 23, 2026
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