This extension does not collect, store or transmit any personal data. It runs only on web.whatsapp.com and only changes how the page looks (colors, chat background, panel styling). It never reads or sends your messages, contacts or any WhatsApp content, and it makes no requests to servers on the internet. The wallpaper image and color palette you choose are saved only in your browser (storage.local) and are removed when you uninstall the add-on. An optional local helper, used only on Linux, listens on 127.0.0.1 (your own computer) so the add-on can read your desktop wallpaper; nothing leaves your device. Full policy: https://github.com/SammyNashed/whatsapp-matugen-theme/blob/main/PRIVACY.md