Volume Harmony is a Chrome extension aimed at providing users with a consistent listening experience while browsing various websites. It automatically adjusts video and audio volumes to a user-defined loudness level, ensuring a seamless transition between different media sources. Additionally, users can set a global playback speed for all types of media content, enhancing their customization options for an improved viewing and listening experience.

The extension utilizes the AudioContext API to manage audio elements effectively, employing gain nodes for precise volume control. By adjusting playback speed through media element properties and storing user preferences in Chrome storage, Volume Harmony ensures that these settings are applied uniformly across all tabs and media elements, tailoring the media playback experience to each user's preferences.