The Site Identity tab allows you to setting what type of logo is displayed and adjust its size for the desktop, tablet, and mobile versions of your website.
1. Log into your Blogger dashboard.
2. Go to Theme > Customize > Advanced > Site Identify.
3. Make necessary changes > Save.
Change the value to display the text logo or image logo:
Text logo: Value 0px to enable.
Image logo: Value 1px to enable.
Change the height of the logo with a maximum limit of 40 pixels.
Logo height (Desktop): Define the logo height for desktop view.
Logo height (Tablet): Define the logo height for tablet view.
Logo height (Phone): Define the logo height for phone view.