Local Browser Processing
When you select or drag an EPUB file into ReadCove, the file is read using the HTML5 FileReader API directly in your local browser memory (`ArrayBuffer`). The contents of your book files are processed locally on your device and are never uploaded to or stored on any external server.
Local Browser Storage
ReadCove saves your reading appearance preferences (such as font size, font family, line height, and active color theme) in your browser's localStorage under the key reader-settings. This data remains stored locally on your device.
Network Requests & Privacy
Opening local EPUB files triggers 0 outbound network requests for file content or telemetry. All book parsing occurs in local browser memory. The public marketing website loads typography styling using Google Fonts (`fonts.googleapis.com`) with `font-display: swap`. When clicking the optional demo book link, the browser fetches the public domain sample file directly.