Customizer for SoundCloud does not collect, store, or transmit any personal data. All settings, uploaded files, and downloaded fonts are stored locally in the browser (storage.local) and never leave the device. The extension has no analytics, telemetry, accounts, or remote configuration, and runs only on soundcloud.com.

The only network requests the extension makes are initiated by the user from the settings page: (1) loading fonts from Google Fonts (fonts.googleapis.com / fonts.gstatic.com) when the user opens the font picker or selects a Google Font, and (2) loading an image or video URL that the user enters themselves as a page background. These requests are sent directly from the browser to the respective servers, as with any website, and are subject to those servers' own privacy policies.