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nico downloader extension

Security at a glance

Low riskSafety score 94/1006 findings

Automated estimate from our latest scan (malware, permissions, obfuscation) — not a security audit. Higher safety score is better.

See the full security report

Firefox listing ID: nico-downloader

Permissions (3)

  • Store local data
  • https://www.nicovideo.jp/*
  • https://dic.nicovideo.jp/*

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Frequently asked questions

Is nico downloader safe to use?

Our latest automated scan rates the Firefox listing of nico downloader at 94/100 (low risk) — malware, permission and obfuscation checks combined. The full report lists every finding behind the number.

What permissions does nico downloader require?

nico downloader requests 3 permissions. The most significant: Store local data, https://www.nicovideo.jp/*, https://dic.nicovideo.jp/*. See the full breakdown in the security report.

Who develops nico downloader?

nico downloader is published by siuma. Impersonators copy popular extension names, so always verify the developer line and listing id on the store page before installing.