Speed Control does not collect, store, or transmit any personal data. All extension logic runs locally within your browser.
The settings you configure (default playback speed, step size, minimum and maximum limits, whether to auto-apply speeds, and language preference) are saved using the chrome.storage API on your own device. These values never leave your browser and are only used to provide the features of the extension.
The extension does not send data to external servers, does not use analytics, and does not share information with third parties.