SECURITY REPORT · EXTENSHI SCAN
YouTube™ dual subtitles
Firefox extension·by Dublicator
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
YouTube™ dual subtitles's safety score vs every other extension we've scanned
Globally
25%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Language Support
15%of language support extensions carry more risk
Riskier ←→ Safer
Ranked against 4,113 language support extensions
Findings
18
median 5Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
10
median 3Declared in manifest
Active users
2372
median 3vs category median
Findings breakdown
Automated security signal · 18 distinct issues across 6 severities
18
distinct issues
detected
detected
Scanners reported 23 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical00%
High422%
Needs Review00%
Medium1372%
Low16%
Info00%
Permissions requested
10 permissions declared
No risky permissions
10 permissions requested — none are flagged as risky.
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Add context menu items
Can add custom items to the right-click context menu
Low
React to page content
Can show or hide the extension icon based on page content rules
Low
Manage fonts
Can read and modify browser font settings
Info
https://www.youtube.com/
No additional information available.
Info
https://www.youtube-nocookie.com/
No additional information available.
Info
https://www.youtube.com/*
No additional information available.
Info
https://www.youtube-nocookie.com/embed/*
No additional information available.
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Scan performed by extenshi.io · Aug 25, 2026
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