Who is nico downloader for?

nico downloader is a consumer product built for nicoNico users who want video downloading and enhanced site functionality.

Is nico downloader free?

Yes — nico downloader is free to use.

What platforms does nico downloader run on?

nico downloader runs on the web and embeddable surfaces.

Is nico downloader still active?

Unverified. nico downloader has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What are alternatives to nico downloader?

Similar projects tracked by PulseGate include Niconico Downloader, Awesome NicoNico Downloader, and Niconico-PepperMint+.

Who makes nico downloader?

nico downloader is developed by siuma.

How long has nico downloader been around?

nico downloader first shipped in 2024.

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nico downloader

Name: nico downloader
Author: siuma

mozilla.orgDownloaders & offline video

nico downloader is an unofficial Firefox extension that supports saving videos from NicoNico and provides additional convenience features for the NicoNico website. It accesses NicoNico domains and is distributed through Mozilla Add-ons.

FreeWebEmbeddable

Visit mozilla.org

1alternative

4features

2024since

Overview

4 features

nico downloader sits in PulseGate's Downloaders & offline video category. It focuses on saving NicoNico videos and using NicoNico with additional convenience features. nico downloader is a consumer product aimed at nicoNico users who want video downloading and enhanced site functionality. nico downloader is free to use. It ships for the web and embeddable surfaces.

siuma builds and maintains nico downloader, and it first shipped in 2024. Key capabilities include video downloading, nicoNico enhancements, and firefox integration. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Video downloading
NicoNico enhancements
Firefox integration
NicoNico domain access

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed10 Sept · 17:58 UTC
nico downloader verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about nico downloader

What is nico downloader?: Nico downloader focuses on saving NicoNico videos and using NicoNico with additional convenience features. It is catalogued under Downloaders & offline video on PulseGate.
Who is nico downloader for?: nico downloader is a consumer product built for nicoNico users who want video downloading and enhanced site functionality.
Is nico downloader free?: Yes — nico downloader is free to use.
What platforms does nico downloader run on?: nico downloader runs on the web and embeddable surfaces.
Is nico downloader still active?: Unverified. nico downloader has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What are alternatives to nico downloader?: Similar projects tracked by PulseGate include Niconico Downloader, Awesome NicoNico Downloader, and Niconico-PepperMint+.Niconico Downloader Awesome NicoNico Downloader Niconico-PepperMint+
Who makes nico downloader?: nico downloader is developed by siuma.
How long has nico downloader been around?: nico downloader first shipped in 2024.

At a glance

Pricing: Free
Platforms: Web
Built for: NicoNico users who want video downloading and enhanced site functionality
Model: B2C
Solves: Saving NicoNico videos and using NicoNico with additional convenience features.

Registered as

Firefox Add-ons: nico-downloader

Developer

siuma

Index record

Indexed: 10 Sept 2026
Lifecycle: Alive
Last seen: 10 Sept 2026

Identity audit (13)

Slug: nico-downloader-mozilla-org
Lifecycle state recorded: 10 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 10 Sept 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 10 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/nico-downloader

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