1. http://www.verypdf.com/pdfinfoeditor/pdf-linearization.html
2. What exactly is PDF Linearization (fast web view)?
   
   PDF file linearization (also known as optimization), also known as quickly internet view, regroups elements and adds linearization information. This helps make the file slightly bigger than the non-linearized file, but it also delivers the subsequent advantages
3. http://www.verypdf.com/pdfinfoeditor/pdf-tools-articles.html

pdf linearization