YouTube Alchemy

Name: YouTube Alchemy
Rating: 5 (3 reviews)
Author: Unknown

Swiss Army knife for YouTube with customizable features and interface improvements, all controlled via intuitive settings panels.

Download

Install

Features & Capabilities

This toolkit offers various features and customization options for YouTube, such as tab view, speed control, export transcripts, square design, auto-theater mode, sort notifications chronologically, and much more.

Videos on the Home page can be color-coded with borders to quickly identify their age and status, while the last uploaded video on the Subscription page can be highlighted and optionally auto-scrolled to it on subsequent visits.

Want to add a link to your favorite channel, video, or to a completely different website? No problem! Up to ten links can be added next to the YouTube logo.

For a complete list of features and updates, visit the official GitHub repository. https://github.com/TimMacy/YouTubeAlchemy

YouTube Alchemy is an independent, private project. It's not affiliated with, endorsed by, sponsored by, or in any way officially connected to YouTube, Google LLC, or Alphabet Inc. "YouTube" and the YouTube logo are trademarks of Google LLC; all other trademarks are the property of their respective owners.

The code of YouTube Alchemy is licensed under the GNU Affero General Public License v3.0 or later (AGPL-3.0-or-later). Not licensed under the AGPL are all images and the "YouTube Alchemy" logo. Copyright © 2025 Tim Macy. All rights reserved.

User Growth & Download Statistics

Add-on

Daily users:

29 -1

Rating:

5.00

(3) 1 new ratings

Version:

10.16 Last updated: 2026-05-24

Version code:

6276061

Creation date:

2025-08-07

Risk:

Permissions:

Host permissions:

https://*.youtube.com/*

Content scripts matches:

*.youtube.com

Size:

152.48KB

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-20

Compare stats and ranking:

Ranking

# 19,966 ▼ 348

Other rankings

#191 in trademark keyword 11 ▼ 2#231 in copyright keyword 12 ▼ 2

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Unknown

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/youtube-alchemy/

Website:

https://github.com/TimMacy/YouTubeAlchemy

User Reviews

Very useful to save yt speed video. Moving to user script! Thanks!

by Be*****, 2026-06-14

by Fi*****, 2025-10-18

View all user reviews ›

Is YouTube Alchemy Safe?

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 Alchemy requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Request access to the following domains: youtube.com
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 Add-ons Store, 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 Alchemy is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details

High This extension was recently updated in the past month. New updates may not be stable or safe.
High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******