Metasploit Pro automatically generates a preview of all web pages that are part of the campaign. An image preview of the web page will render in the report if the web page was used as part of a phishing campaign. If a web page was used to deliver malicious code, such as client-side exploits, Java applets, Browser Autopwn, or executable files, a preview will not display in the report.
If you want to include the raw HTML that was used to create a web page, you can select the Include web page HTML option on the New Report form. When you enable this option, the raw code will be displayed under each web page preview in the report.