Privacy Policy — Alt Cloud Browser Extension

Last updated: 28 April 2026

The Alt Cloud browser extension is built and maintained by Datum Technology, Inc. as part of the awesome-alt-clouds project. This document describes — exhaustively — what the extension does and does not do with data.

What the extension collects

Nothing.

The extension does not collect, store, transmit, or share any personal data, browsing history, page content, or telemetry. There is no analytics SDK, no remote configuration, no error reporting, no usage metrics, no user identifier, and no account.

What the extension reads locally

To function, the extension reads the following from your browser, on-device only:

• The hostname of the current tab (e.g. example.com), to match it against the Alt Cloud directory and display the correct toolbar icon state.
• When you open the popup on a site that is not yet listed, three pieces of page metadata: the page title (document.title), Open Graph meta tags (<meta property="og:*">), and the favicon URL. These are used only to pre-fill the "Suggest this site" form so you don't have to type them.

None of this information is stored after the popup closes. None of it is transmitted off your device.

What the extension stores on your device

The extension uses browser.storage.local to cache one thing: a copy of the public Alt Cloud directory (clouds.json), refreshed at most once per day or on manual request. This cache contains no information about you.

Network requests

The extension makes outbound requests only as described below. You can verify these in your browser's network inspector:

1. Fetching the directory at https://www.alt-cloud.org/clouds.json, no more than once every 24 hours (or on manual refresh from the popup). This request contains no information about you beyond what your browser sends with any HTTP request.
2. GitHub issue URLs opened in a new tab when you click "Suggest this site", "Report a correction", or "Suggest they graduate". These URLs are prefilled with page metadata and opened in your browser; the extension itself does not submit anything. You review and submit manually.

Permissions

• activeTab, tabs — to read the current tab's URL and apply the toolbar badge
• storage — to cache the directory locally
• scripting — to read the page title and Open Graph tags when you open the popup on an unlisted site
• host_permissions for https://www.alt-cloud.org/* — to fetch the directory

Full text and source: https://github.com/datum-cloud/awesome-alt-clouds-browser-extension/blob/main/PRIVACY.md