I'm trying to make a functionality for users, so when they add a link in a body of some article(in text editor with other text), it displays as an image. Any ideas? Thanks)
CKeditor has the ability to add an image to a text field using its url:
This module will allow Drupal to replace textarea fields with the CKEditor - a visual HTML editor, usually called a WYSIWYG editor. This HTML text editor brings many of the powerful WYSIWYG editing functions of known desktop editors like Word to the web. It's very fast and doesn't require any kind of installation on the client computer.