extenshi.io
SECURITY REPORT · EXTENSHI SCAN

Fast Video Downloader

Firefox extension·by fefox
63
/ 100 SAFETY SCORE
RISKY
Several elevated signals. Read the findings before sharing this with your team.

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

Fast Video Downloader's safety score vs every other extension we've scanned
Globally
7%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 402,594 extensions
In Photos Music Videos
2%of photos music videos extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 11,119 photos music videos extensions
Findings
45
median 4Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
8
median 3Declared in manifest
Active users
13
median 6vs category median

Findings breakdown

Automated security signal · 45 distinct issues across 6 severities
45
distinct issues
detected
Scanners reported 110 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

5 risky permissions of 8 total
1 critical permission require attention
This extension requests 8 permissions in total. 5 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

High
Observe web requests

Can monitor all network requests made by the browser

High
Manage downloads

Can initiate downloads and access your download history

High
Block and modify web requests

Can intercept, block, or modify any network request before it completes

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Block requests with host access

Can block or redirect network requests and requires host permissions

Info
*://*/*

No additional information available.

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Scan performed by extenshi.io · Aug 6, 2026
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