SECURITY REPORT · EXTENSHI SCAN
Maximize Video Previewer
Firefox extension·by Isaac Kirby
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
Maximize Video Previewer's safety score vs every other extension we've scanned
Globally
78.32%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
68.32%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
18
median 38Lower is safer
Risky permissions
2
median 1Critical + high perms
Total permissions
5
median 4All declared perms
Critical findings
0
median 2Severity = Critical
Findings breakdown
Automated security signal · 18 findings across 5 severities
18
findings
detected
detected
Critical00%
High211%
Medium950%
Low739%
Info00%
Permissions requested
2 risky permissions of 5 total
2 high-risk permissions require attention
This extension requests 5 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
High
Access all HTTP sites
Can read and modify content on all non-encrypted websites
High
Access all HTTPS sites
Can read and modify content on all encrypted websites
Medium
Store local data
Can save data locally in the browser for persistence
Info
file:///*
No additional information available.
Info
https://www.youtube.com/*
No additional information available.
Are you the author of Maximize Video Previewer?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Scan performed by extenshi.io · Jun 25, 2026· partial run (some scanners failed)
Browser extensions made transparent.