"This page is based on David Reid's presentation DrupalCon Austin 2014: FUTURE-PROOF YOUR DRUPAL 7 SITE. Dave covers new features available in Drupal 8, and how you can use those new features now in Drupal 7. Dave Ried also did a similar presentation at DrupalCon Amsterdam 2014."
"Pathologic is an input filter which can correct paths in links and images in your Drupal content in situations which would otherwise cause them to “break;” for example, if the URL of the site changes, or the content was moved to a different server. Pathologic can also solve the problem of missing images and broken links in your site’s RSS feeds. See more example use cases on the documentation page."