Your store uses three different files for your logo. The first logo file appears in the header of your store and has a link back to your home page. The second logo file appears at the top of email messages that are sent from your store. The third logo file is the favicon that appears in the address bar of your browser.
Alt text appears when a mouse hovers over an image. As a best practice, alt text should be provided for every image on your site because it is indexed by search engines, and also improves the accessibility of your site for people who use screen readers.
The size and position of the store logo file is determined by your theme. If you resize the image by entering the width and height of the image, make sure to retain the exact aspect ratio &emdash; otherwise, the image might be distorted. To find the exact size of the sample logo used in a theme, right-click the logo. The width and height of the image on the Properties tab of the context menu. You can also use the CSS Editor to modify the dimensions and relative position of the logo, if necessary.
Method 1: From Start My Store
Method 2: From the Themes Editor
To speed up the display of images, your browser saves a temporary copy of each image in a cache on your computer. To make sure that your new logo appears in the header of your store, do one of the following: