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SECURITY REPORT · EXTENSHI SCAN

YouTube MP3 Downloader

Firefox extension·by Martin
78
/ 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

YouTube MP3 Downloader's safety score vs every other extension we've scanned
Globally
33%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 409,596 extensions
In Download Management
24%of download management extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 4,840 download management extensions
Findings
10
median 5Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
6
median 4Declared in manifest
Active users
11
median 9vs category median

Findings breakdown

Automated security signal · 10 distinct issues across 6 severities
10
distinct issues
detected

Permissions requested

2 risky permissions of 6 total
1 critical permission require attention
This extension requests 6 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
Critical
Communicate with desktop apps

Can exchange messages with applications installed on your computer

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
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 · Sep 6, 2026
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