Media Controller Firefox

Media Controller

Globally control media playbacks across tabs at the toolbar.

User Growth & Download Statistics

Contact the developer

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Developed by:
Tony Chan
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/mcx/

User Reviews

Users find Media Controller useful and frequently rely on it for global media control across sites like Twitch and YouTube. Many praise its usefulness and ease of use. However, recurring issues center on reliability: the extension can be temperamental, occasionally failing to control playback, or only opening a tab link instead of controlling media. Spotify and YouTube Music remain problematic for many users. Key features often requested include volume control, a keyboard shortcut to open the control panel, and a picture-in-picture option. Visual polish and consistent appearance in the toolbar are also cited as improvements.
Pros
  • Genuinely helpful extension that users rely on for daily media control.
  • Works across major sites (Twitch, YouTube, YouTube Music) for media control.
  • Easy to use with a clean, usable UI.
  • Overall effective at accomplishing its core function and highly valued by users.
Cons
  • Reliability issues: temperamental, often inconsistent or stops working.
  • Spotify support is broken: cannot control Spotify; sometimes only opens a link to the tab.
  • YouTube Music support is inconsistent or not working.
  • Missing essential features: no volume control and no keyboard shortcut (also requests for PiP button).
  • UI polish needed; some reviews describe the UI as rough or outdated, and it sometimes fails to appear in the toolbar.
Recent reviews
Just what I wanted and was looking for, unfortunately it seems temperamental and only works sometimes. It really struggles with Spotify. Could also use a facelift as it look very rough visually.
by An*****, 2026-03-16

by ma*****, 2026-03-15

by Ya*****, 2026-03-15
View all user reviews ›

Is Media Controller 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.

Media Controller 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.
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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.

Media Controller has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
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