Parsing meta tags from html page on iOS

[djmlbp]

Im looking for a way for my app to get the 'open graph' tags on many web pages.They usually contain an image and a title, both of which would be useful for my app to have, given a URL. Obviously not all web pages have these tags, but many do.They look like this: \[code\]<meta property="og:type" content="article" /><meta property="og:site_name" content="iPhone Dev SDK" /><meta property="og:title" itemprop="name" content="..." /><meta property="og:url" content="..." />\[/code\]A possible approach to this is to download the HTML and either parse it using NSXMLParser or to simply use NSRegularExpression to find these meta tags which are standardised over all the pages which use them.What would be the best approach?ThanksVb