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SECURITY REPORT · EXTENSHI SCAN

Ostendo – YouTube Screenshots

Firefox extension·by Kabir
68
/ 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

Ostendo – YouTube Screenshots's safety score vs every other extension we've scanned
Globally
12%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 415,560 extensions
In Social & Communication
6%of social & communication extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 13,742 social & communication extensions
Findings
68
median 6Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
6
median 3Declared in manifest
Active users
168
median 4vs category median

Findings breakdown

Automated security signal · 68 distinct issues across 6 severities
68
distinct issues
detected
Scanners reported 79 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

1 risky permission of 6 total
1 high-risk permission require attention
This extension requests 6 permissions in total. 1 of them grant broad capabilities that are worth a careful look.
High
View open tabs

Can see URLs and titles of all open tabs

Medium
Store local data

Can save data locally in the browser for persistence

Info
https://img.youtube.com/

No additional information available.

Info
https://yt3.ggpht.com/*

No additional information available.

Info
https://ostendo.app/*

No additional information available.

Info
https://*.youtube.com/*

No additional information available.

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Scan performed by extenshi.io · Oct 21, 2026
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