You can add a footer to all pages of your Google site, and add text and images to the footer. Footers are useful to display contact information or copyright details for the site.
To add a footer to all pages of the site:
Position the mouse along the bottom of the current page
Click on the Add Footer link
Type the text you wish to appear along the bottom of each page. The Small text style will be used by default, but you can change this by clicking on the first drop-down arrow on the toolbar.
Click away from the footer when complete.
You can add an icon to show on each page in your Google Site that visitors can click on to find out the date on which the last edit to that page was made. You can also allow your site viewers to send feedback or ask a question about your site from a standard Content Form that can be viewed from any page on your site. The feedback will be sent to the site owner by email, but site viewers will not see the owner's email address directly.
The following icon will show in the foooter of each site page:
Which will show the following options on mouse-over
Clicking on the Admin link will show information about the site owner:
Clicking on the Contact link will show the contact form:
To set the options to show in the footer:
Click on the Settings cog near the top-right corner of the Sites screen
Click on the Viewer tools option on the left-hand side of the screen
Choose whether to show the time at which the page was last updated
Choose whether to show the contact form
Click on the Close button in the top-right corner of the dialog box