SECURITY REPORT · EXTENSHI SCAN
Mass Downloader — Save Images, Media & Files | Zip
Chrome extension·by MassDownload
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
Mass Downloader — Save Images, Media & Files | Zip's safety score vs every other extension we've scanned
Globally
24%of extensions carry more risk
Riskier ←→ Safer
Ranked against 371,045 extensions
In Productivity
32%of productivity extensions carry more risk
Riskier ←→ Safer
Ranked against 177,348 productivity extensions
Findings
16
median 16Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
6
median 3Declared in manifest
Active users
8
median 14vs category median
Findings breakdown
Automated security signal · 16 distinct issues across 6 severities
16
distinct issues
detected
detected
Critical16%
High16%
Needs Review00%
Medium1381%
Low16%
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
Manage downloads
Can initiate downloads and access your download history
High
Execute scripts in pages
Can inject and execute JavaScript code in web pages
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
Add context menu items
Can add custom items to the right-click context menu
Low
Create offscreen documents
Can create hidden documents for background processing tasks
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Scan performed by extenshi.io · Aug 30, 2026
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