About this extension

Feed Preview is a Firefox Addon which indicates the availability of RSS or Atom feeds in the browser's URL bar and renders a previews of feeds.

Feed Preview has the following combination of features which are unique in combination and set it apart from similar feed previewing addons:

Extensive feed format support: robust parser which handles the RSS 1 (0.9, 1.0), RSS 2 (0.91, 0.92, 0.93, 0.94, 2.0), and Atom (0.3, 2.0) feed families including obscure features, supports non-UTF-8 character sets, and uses content sniffing to detect feeds served with XML or RDF content types
Media files: support for enclosed media files which can be downloaded from the preview page
Subscription support: allows subscribing to feeds using user-configurable web-based feed readers and ships with presets for frequently used services and integrates with addon feed readers
Secure: HTML content/summaries are displayed in sandboxed iframes, all other elements are sanitized
Preserves the feed URL: the preview is generated via stream filters before it hits the rendering engine, there are no redirects and the "View Source" function works as expected
Modern design: Follows the Photon design guidelines and integrates seamlessly with Firefox
Open source: published under the MPL 2.0
Internationalization: the code is fully internationalized, user submitted translations are welcome

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Release notes for 12

Show URL of each feed as a tooltip in the feed selection popup

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