How does Safari's reader feature work?

Question

I want to add a similar feature to a tool I'm making. I'm interested in how it works code-wise. I want to be able get an html page and exclude all but the article.

Answer 1

The Readability project does something similar for chrome and iOS. I'm not sure how it detects the content automatically but I know that Readability has an API for people who want to integrate it's features. You might want to check that out.

http://www.readability.com/learn-more