Reduce file size by shortening URLs and safely removing all standard comments and unnecessary whitespace from an HTML document.
Creates relative URLs for images when inserting into posts.
Save relative URLs to database. Present absolute URLs for viewing.
Now its easy to change domains and keep links and images fine you just need to use this shortcode [base_url] as your base url for links and images.
Corrects Firefox behavior in which pasting formatted content in the editor converts absolute URLs to relative URLs.