How to update your companies background image on your Business Profile
Step 1: Log into your Profile.
Step 2: Navigate to your Business Profile.
Step 3: Click the first pencil icon under "Business Profile".
Step 4: Under "Background Image" click this section to upload your desired image and click save.
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Tip: Make sure the dimensions are 1350px wide x 210px tall. You can adjust the image in "Paint" or the "Photoshop" editor application.