SECURITY REPORT · EXTENSHI SCAN
YouTube Video Player Preview
Firefox extension·by Baris Derin
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 Video Player Preview's safety score vs every other extension we've scanned
Globally
75.37%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
65.37%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
15
median 38Lower is safer
Risky permissions
7
median 1Critical + high perms
Total permissions
11
median 4All declared perms
Critical findings
2
median 2Severity = Critical
Findings breakdown
Automated security signal · 15 distinct issues across 6 severities
15
distinct issues
detected
detected
Scanners reported 18 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical213%
High213%
Needs Review00%
Medium960%
Low213%
Info00%
Permissions requested
7 risky permissions of 11 total
2 critical permissions require attention
This extension requests 11 permissions in total. 7 of them grant broad capabilities that are worth a careful look.
Critical
Manage other extensions
Can enable, disable, or uninstall other browser extensions
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
Manage downloads
Can initiate downloads and access your download history
High
Access browser cookies
Can read and modify cookies, potentially accessing login sessions
High
Observe web requests
Can monitor all network requests made by the browser
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
Info
*://*.youtube.com/*
No additional information available.
Info
*://*.barisderin.com/*
No additional information available.
Are you the author of YouTube Video Player Preview?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Add the badge to your README
Show YouTube Video Player Preview's live security score on GitHub or in your docs
Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
Browser extensions made transparent.