Is Duolingo Sound Controls safe?

Customize Duolingo sound volume and playback speed by sound type and activity context.

This extension adds a toolbar popup for adjusting Duolingo audio settings, with separate volume and speed controls for effects, sentences, words, and other sounds. Settings can vary by context such as listening challenges, stories, guidebooks, characters, forum discussions, and other Duolingo areas, and can be relative to the original settings or override them.