Check the following to confirm the quality of a Web PDF:
Use Acrobat preflight to check.
All TOC entries should be included as well as any major sections not included in the TOC.
Examples: Cover Page, Title Page, and Copyright Page.
Table of Contents Links
Print PDF Comparisons
URLs that had breaking characters inserted in InDesign may result in Acrobat linking to URL fragments.
All Web PDFs should include the book title and author name at a minimum.