RSSHub-Radar

RSSHub Radar is a browser extension for Chrome, Firefox, Edge, and Safari that detects RSS feeds on the page you are currently visiting. RSS is a format websites use to publish content updates, so people can subscribe to a site and receive new posts in a feed reader rather than checking the site manually. Many sites have RSS feeds but do not display them prominently, and RSSHub Radar makes them discoverable with one click.

The extension is a companion to RSSHub, an open-source project that generates RSS feeds for hundreds of websites that do not offer them natively, such as social media profiles, news sites, and forums. When you visit a page, RSSHub Radar checks both for any official RSS feed the site exposes and for whether RSSHub has a compatible feed for that page. If either is found, the extension shows a subscribe button.

Subscribing is streamlined. The extension supports one-click subscription to many feed readers including Feedly, Inoreader, Feedbin, Tiny Tiny RSS, Miniflux, FreshRSS, The Old Reader, and Feeds.Pub. You choose your preferred reader once in the extension settings, and clicking subscribe opens the correct URL directly.

The extension is available in the Chrome Web Store, the Firefox Add-ons catalog, the Microsoft Edge Add-ons store, and the Apple App Store. A manual install from a downloaded zip file is also documented.

The project is written in TypeScript and uses the WXT framework for building cross-browser extensions from a shared codebase. The rules that define which RSSHub feeds correspond to which websites are maintained in a separate documentation repository and can be contributed to by anyone. The extension is released under the AGPL-3.0 license.