This document explains what OpenWhen stores and why. It's written for reviewers and users.
chrome.storage.local on your device.OpenWhen injects a small in-page banner into web pages (HTTP/HTTPS) when a scheduled URL is opened by the extension. The banner is added by a content script which runs only on HTTP/HTTPS pages. Host permissions are limited to http://*/* and https://*/* in the manifest to allow the content script to run on web pages opened by the extension.
To delete all saved schedules, open the extension Options page and remove schedules, or remove the extension (which clears extension data), or clear extension data via the browser's Extensions UI.
Report privacy questions or issues at https://github.com/dennymarcels/OpenWhen.