Previous versions of the Mozilla Firefox web browser introduced a new feed icon (also known as the RSS icon) used in association with open web syndication formats such as RSS and Atom: The Mozilla Foundation has made these icons freely available for use by others; this document contains suggested guidelines for use of the icons, and is published and maintained by the Mozilla Foundation as a servic
![Feed Icon Guidelines](https://cdn-ak-scissors.b.st-hatena.com/image/square/fc90bbf8e8515c22f771e6a1d7f1a6a909ced87c/height=288;version=1;width=512/https%3A%2F%2Fwww.mozilla.org%2Fmedia%2Fimg%2Fmozorg%2Fmozilla-256.4720741d4108.jpg)