As convienent as the Firefox 2 RSS preview may be to some, to others, the feature does nothing other than to hamper the process of subscribing to a websites / blogs content feed. The trick to removing the preview functionality integrated into the latest release of Firefox? A small code tweak to the FeedConverter.js file.

Windows users will find this file located at: ‘C:\Program Files\Mozilla Firefox\components\FeedConverter.js’

OS X users should look here: /Applications/Firefox.app/Contents/MacOS/components/FeedConverter.js’

If you’re scratching your head wondering how to get into the ‘Contents’ folder of an OS X application, simply CTRL+Click on an item and select ‘Show package contents’.

You’ll need to look near line 187 (using one of your favorite plain text editors) for the following block of code:

var chromeChannel;
if (result.doc) {
// If there was no automatic handler, or this was a podcast,
// photostream or some other kind of application, we must always
// show the preview page…

// Store the result in the result service so that the display page can
// access it.
feedService.addFeedResult(result);

// Now load the actual XUL document.
var chromeURI = ios.newURI(FEEDHANDLER_URI, null, null);
chromeChannel = ios.newChannelFromURI(chromeURI, null);
chromeChannel.originalURI = result.uri;
}
else
chromeChannel = ios.newChannelFromURI(result.uri, null);

chromeChannel.asyncOpen(this._listener, null);
}

Simply edit out the if (result.doc) to read if (0). Restart Firefox and your subscriptions will no longer be previewed using Firefox’s built-in results view. [via]