Schmidt's Katz

Name: Schmidt's Katz
Author: Cubimon

By: Cubimon

Control music/video with keyboard shortcuts.

This add-on was removed from Firefox Add-ons Store on 2026-02-02

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Features & Capabilities

Control your music and videos with Schmidt's Katz's keyboard shortcuts. This plugin aims to be feature-complete - you can change volume, seek or even change the playback rate using keystroke commands. To use shortcuts outside Firefox, a native interface integrates this plugin into MPRIS on Linux.

This extension may be interesting for you, if you want to:

work efficiently with music
control music in a comfort way - you don't have to search tabs and do half a dozen mouse/keyboard actions
be able to mute music immediately
use a lot of tabs and easily lose the music tab

At the moment only Youtube works. Source code can be found on Github, any kind of contribution is welcome. Popup icons are from Fontawesome.

User Growth & Download Statistics

Add-on

By:

Cubimon

Daily users:

Version:

1.5 Last updated: 2020-07-20

Version code:

5067506

Creation date:

2019-10-30

Risk:

Permissions:

Content scripts matches:

www.youtube.com
music.youtube.com
www.twitch.tv
soundcloud.com
open.spotify.com
www.netflix.com

Size:

338.50KB

Email:

cu*****@gmail.com

URLs:

Website

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-02-02

Compare stats and ranking:

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:

Cubimon

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/schmidt-s-katz/

Email:

cu*****@gmail.com

Website:

https://github.com/cubimon/Schmidt-s-Katz

Is Schmidt's Katz 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.

Schmidt's Katz requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Request access to the following domains: spotify.com, youtube.com, twitch.tv, soundcloud.com, netflix.com
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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.

Schmidt's Katz may not be trust-worthy. Avoid installing if possible unless you really trust this publisher.