If you are using Google sites for your presentation portfolio, you may want to customize the portfolio with a logo of your own design and style. The default logo is your site name (self-selected at site creation), and its styling is dependent on your theme choice. You can control whether or not it is displayed by checking or unchecking the box on the General settings page under your Site name:

To get to this setting, click the More Actions button in the upper right corner. Under Site Actions, select Manage Sites,  and under the Site settings, select General.

To add a custom logo in your site,  you must first create the logo. Your logo may be a picture, text or combination of both and is usually saved as a .jpg, .gif or .png. Google recommends that your logo be 145 px wide x 52 px tall, otherwise, it might not appear properly in your theme. For your reference, the image size of the logo used in the portfolio-guidance template shown below is 500 pixels wide by 80 pixels high:

Once you have created your logo, click the More Actions button in the upper right corner of your site. Under Site Actions select Manage Sites, and under Site appearance, click Site Layout. In the Header section, click the change logo link.

On the change logo page, select Custom Logo and browse for the logo file on your hard drive. Once you have the image selected, click OK. Make sure to click Save changes before returning to your site.

If you want to view the logo before saving your changes, click Preview next to Save changes at the bottom of the page. Notice that a new window or tab is opened depending on your settings. Don’t forget that you must still save or cancel your changes after viewing your logo. If you prefer to save and then go back to your site without using preview, click Save changes at the bottom and the Return to site link in the upper left corner of your page.

To exclude a logo image all together,  select the No logo option from the change logo page.