Some described embodiments relate to techniques for editing markup elements of a markup language document to emphasize a portion of the visible content elements of the markup language document. The techniques may be implemented in any suitable manner, including via scripting language code (e.g., JavaScript) that is incorporated into the markup language document but is not preconfigured with information regarding the markup language document or any other markup language document. The scripting language code may perform the editing automatically, and based on an automatic analysis of markup elements of the markup language document. Some embodiments may include determining the portion of the markup language document to be emphasized by identifying content of interest to a user, including by determining a set of related content through analyzing a structure of markup elements of the markup language document and/or layout of visible content elements of the markup language document.