Who should use Cobalt Downloader for YouTube?

Cobalt Downloader for YouTube is a consumer product built for firefox users who download YouTube videos and music.

Does Cobalt Downloader for YouTube have a free plan?

Yes — Cobalt Downloader for YouTube is free to use.

What platforms does Cobalt Downloader for YouTube run on?

Cobalt Downloader for YouTube runs on the web and embeddable surfaces.

Is Cobalt Downloader for YouTube still maintained?

Unverified. Cobalt Downloader for YouTube 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 Cobalt Downloader for YouTube?

Similar projects tracked by PulseGate include Cobalt Downloader, Youtube Video Downloader, and YouTube Video Downloader.

Who makes Cobalt Downloader for YouTube?

Cobalt Downloader for YouTube is developed by MDC.

When did Cobalt Downloader for YouTube launch?

Cobalt Downloader for YouTube first shipped in 2024.

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Cobalt Downloader for YouTube

Name: Cobalt Downloader for YouTube
Author: MDC

mozilla.orgDownloaders & offline video

Cobalt Downloader for YouTube is a Firefox browser extension that adds controls for downloading music and videos from YouTube. It is intended for individual Firefox users who want to save YouTube media with a few clicks.

FreeWebEmbeddable

Visit mozilla.org

1alternative

5features

2024since

Overview

5 features

Cobalt Downloader for YouTube sits in PulseGate's Downloaders & offline video category. It focuses on downloading YouTube videos and music without leaving the YouTube website. Cobalt Downloader for YouTube is a consumer product aimed at firefox users who download YouTube videos and music. Cobalt Downloader for YouTube costs nothing to use. Cobalt Downloader for YouTube is available on the web and embeddable surfaces.

MDC builds and maintains Cobalt Downloader for YouTube, and it first shipped in 2024. Key capabilities include youTube downloads, video downloads, and music downloads. The interface is available in 32 languages, including Czech, German, and Greek.

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

YouTube downloads
Video downloads
Music downloads
MP3 downloads
In-page controls

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

Indexed12 Sept · 06:07 UTC
Cobalt Downloader for YouTube verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Cobalt Downloader for YouTube

What does Cobalt Downloader for YouTube do?: Cobalt Downloader for YouTube focuses on downloading YouTube videos and music without leaving the YouTube website. It is catalogued under Downloaders & offline video on PulseGate.
Who should use Cobalt Downloader for YouTube?: Cobalt Downloader for YouTube is a consumer product built for firefox users who download YouTube videos and music.
Does Cobalt Downloader for YouTube have a free plan?: Yes — Cobalt Downloader for YouTube is free to use.
What platforms does Cobalt Downloader for YouTube run on?: Cobalt Downloader for YouTube runs on the web and embeddable surfaces.
Is Cobalt Downloader for YouTube still maintained?: Unverified. Cobalt Downloader for YouTube 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 Cobalt Downloader for YouTube?: Similar projects tracked by PulseGate include Cobalt Downloader, Youtube Video Downloader, and YouTube Video Downloader.Cobalt Downloader Youtube Video Downloader YouTube Video Downloader
Who makes Cobalt Downloader for YouTube?: Cobalt Downloader for YouTube is developed by MDC.
When did Cobalt Downloader for YouTube launch?: Cobalt Downloader for YouTube first shipped in 2024.

At a glance

Pricing: Free
Platforms: Web
Built for: Firefox users who download YouTube videos and music
Model: B2C
Solves: Downloading YouTube videos and music without leaving the YouTube website.

Registered as

Firefox Add-ons: cobalt-downloader-for-youtube

Developer

MDC

Index record

Indexed: 12 Sept 2026
Lifecycle: Alive
Last seen: 12 Sept 2026

Identity audit (13)

Slug: cobalt-downloader-for-youtube-mozilla-org
Lifecycle state recorded: 12 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 12 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: 12 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/cobalt-downloader-for-youtube

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