SECURITY REPORT · EXTENSHI SCAN

Is Multi-Format Sub Editor safe?

Checked version: 1.10.5 · Scan date (UTC): 2026-10-21

Firefox extension·by 79KING
71
/ 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

Multi-Format Sub Editor's safety score vs every other extension we've scanned
Globally
8%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 436,185 extensions
In Photos Music Videos
4%of photos music videos extensions carry more risk
This extension
Riskier ←→ Safer
Ranked against 11,435 photos music videos extensions
Findings
127
median 7Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
20
median 3Declared in manifest
Active users
1
median 7vs category median

Findings breakdown

Automated security signal · 127 distinct issues across 6 severities
127
distinct issues
detected
Scanners reported 141 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

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

Can save data locally in the browser for persistence

Medium
Monitor navigation

Can observe and track tab navigation events and URL changes

Medium
Access user identity

Can get OAuth2 tokens and access your Google account identity

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

No additional information available.

Info
https://*.tver.jp/*

No additional information available.

Info
https://*.nicovideo.jp/*

No additional information available.

Info
https://*.vimeo.com/*

No additional information available.

Info
https://*.bilibili.com/*

No additional information available.

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Scan performed by extenshi.io · Oct 22, 2026
Browser extensions made transparent.

What this assessment covers

Store listing
Firefox
Checked version
1.10.5
Current listed version
1.10.5
Scan date (UTC)
Assessment status
Completed

Recorded findings: 1 critical and 0 high severity. Read the finding details before interpreting the score; automated flags are not proof of malicious behaviour.

Automated analysis looks for suspicious code, permissions and other risk signals. It does not observe every runtime behaviour or independently audit the publisher’s servers. A low-risk result is not a guarantee of safety. How our checks work.

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