If you can't see your browser's bookmark toolbar then you need to make it visible. Choose "Bookmarks Toolbar" in View > Toolbars
If you can't see the Page Checker installer button then make sure you are in the Website dashboard and not the Analytics dashboard. (Look for the title in the top left just below the navigation bar).
Your browser may display a message that a popup window has been blocked. Click on the yellow panel and choose "always allow popups from this site" from the options provided
Issues relating to file properties for images (such as size) and PDFs (such as title) cannot be validated within Page Checker. It is therefore important to check these issues in your Crownpeak DQM Website Dashboard when reviewing your website’s performance
NOTEIt is important that you install the version of Page Checker that comes with your own Website Dashboard as this will be specially configured for your site. If you have multiple sites, you will need to have multiple instances of Page Checker installed.