Is Metronome safe?

Provides a browser-based metronome for music practice with adjustable tempo, volume, and sounds.

This extension lets you run a metronome while continuing to browse the web. It supports different sounds, volume control, subdivisions up to 9/8, tap tempo, bar breaks, and keyboard shortcuts for play, volume, BPM, and adding songs. Songs you work on are saved automatically to local storage and loaded automatically.