This tool helps you start the on page analysis of a webpage for a specific keyword.
The [Keywords] panel shows you the keywords that available in your current project.
The [Webpages] panel contains the Index pages of the websites added in your current project.
To add more pages to be analyzed, click on the drop down arrow icon and open the "Add webpage" dialog. Here, enter the specific URL you are interested in.
Then just click on the [Update] button to start the analysis and retrieve the data.

Results are detailed by the importance of the factors analyzed. According to the values identified, the webpages receive a score which indicates the on page optimization level for the keyword selected.
Where the values reflect content optimization problems on the webpage, you also receive Advices with the best practices used to solve the issues in question.