YouTube Downloader – Free YouTube Video Downloader & MP3 Converter | 4K Support
Easily download YouTube videos in MP3, MP4, HD, or 4K with this fast and free Firefox extension. Convert YouTube to MP3 or download videos in any format with one click.
- By:
- Alpha Stack
- Daily users:
- 3,577 379
- Rating:
- 3.37 (43)
0.12
- Version:
- 1.0 Last updated: 2025-01-13
- Version code:
- 5873781
- Creation date:
- 2025-01-11
- Risk:
- High risk impact Moderate risk likelihood
- Permissions:
- activeTab
- tabs
- *://*.youtube.com/*
- activeTab
- Size:
- 66.23KB
- Full description:
- See detailed description
- Source:
- Firefox Browser Add-ons
- Data ingested on:
- 2025-07-13
User reviews
Pros
- Effectively downloads videos from YouTube as intended.
- Provides fast downloads with good performance.
- Some users find it simple and better than other similar extensions.
- Highly recommended by several users who described it as the best.
- Allows downloading of important or personal videos successfully.
Cons
- Opens additional tabs or websites instead of downloading directly.
- Excessive ads and pop-ups, some flagged as viruses or threats.
- No visible download button on the video page, requiring manual link copy-paste.
- Unwanted redirects leading to unsafe or unrelated content.
- Requires manual copy and pasting of video URLs, making usage inconvenient.
Recent reviews
Не работает.
by Ma*****, 2025-07-12
Every time click download will load ads and some ads are virus. Starting can download, after that can't download anymore and keep loading virus + ads.
by Le*****, 2025-07-07
by Fi*****, 2025-07-04
Extension safety
Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk
impact extension cannot do much harms, whereas a high risk impact extension can do a lot of
damage like stealing your password, bypassing your security settings, and accessing your
personal data. High risk impact extensions are not necessarily malicious. However, if they
do turn malicious, they can be very harmful.
YouTube Downloader requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- Critical ******* ****** ** *** ********* ******** ********************
- High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious.
This is determined by the publisher and the Firefox add-on reputation on
Firefox Browser Add-ons, the amount of time the Firefox add-on has been
around, and other signals about the
Firefox add-on. Our algorithms are not perfect, and are subject to change
as we discover new ways to detect malicious extensions. We recommend that you always
exercise caution when installing a Firefox add-on.
YouTube Downloader is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
Upgrade to see full risk analysis details
Compare add-ons
- Compare YouTube Downloader vs Free Youtube Downloader
- Compare YouTube Downloader vs YouTube Video Downloader Upto 4k Resolution.
- Compare YouTube Downloader vs Youtube mp3 & video downloader
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