Recommended file types and sizes
Logo: .jpg and .png file types with a height no larger than 400px
Favicon: .png file type with an equal width and height of 50px
*A favicon is the small image that appears in your browser tab, next to your website title.
From your Dashboard go to Settings in the top right corner.
On the Store tab, select Upload Logo or Upload Favicon.
A new window will pop up. Select the image file you wish to upload and feature as your logo or favicon.
Once you have selected your image, click Upload.
Once your images are uploaded, click Save Changes.
Check your storefront to see how the new logo appears. If it seems too small, or too large navigate to Settings > Design tab.
On this tab you can adjust the Header Height which will change the logo's size on your storefront. The default value for this setting is 120px. Try incrementing up or down by 10px until you reach your desired size. In our example, we've set the size to 100px. Click Save Changes, and refresh your storefront's page to see how your logo appears.
You've now successfully added a logo and favicon to your storefront.