SECURITY REPORT · EXTENSHI SCAN
niconico uploader ng
Firefox extension·by rinsuki
0
/ 100 SAFETY SCORE
EXCELLENT
Looks clean. No meaningful risks detected in this scan.
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
niconico uploader ng's safety score vs every other extension we've scanned
Globally
67%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Other
32%of other extensions carry more risk
Riskier ←→ Safer
Ranked against 26,888 other extensions
Findings
5
median 3Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
5
median 3Declared in manifest
Active users
16
median 2vs category median
Findings breakdown
Automated security signal · 5 distinct issues across 6 severities
5
distinct issues
detected
detected
Critical00%
High00%
Needs Review00%
Medium480%
Low120%
Info00%
Permissions requested
5 permissions declared
No risky permissions
5 permissions requested — none are flagged as risky.
Medium
Custom menus
Can add custom items to the browser context menu
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Unlimited local storage
Can store large amounts of data locally without size limits
Info
https://www.nicovideo.jp/ranking
No additional information available.
Info
https://www.nicovideo.jp/ranking?*
No additional information available.
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Scan performed by extenshi.io · Aug 19, 2026
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