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SECURITY REPORT · EXTENSHI SCAN

ZeroNSFW - Free NSFW Blocker

Chrome extension·by Arctic Tool Lab
65
/ 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

ZeroNSFW - Free NSFW Blocker's safety score vs every other extension we've scanned
Globally
9%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 401,999 extensions
In Productivity
12%of productivity extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 194,438 productivity extensions
Findings
21
median 16Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
3
median 3Declared in manifest
Active users
34
median 14vs category median

Findings breakdown

Automated security signal · 21 distinct issues across 6 severities
21
distinct issues
detected

Permissions requested

3 permissions declared
No risky permissions
3 permissions requested — none are flagged as risky.
Medium
Store local data

Can save data locally in the browser for persistence

Low
Create offscreen documents

Can create hidden documents for background processing tasks

Low
Block network requests (declarative)

Can block or redirect network requests using predefined rules without seeing content

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Scan performed by extenshi.io · Aug 20, 2026
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