Google forms header image size

The header image should be at least 800px wide and 200px in height

Click here to download a sample image of 800 x 200

If you have a larger image, you don't have to bother cropping the image before uploading; Make use of the Google forms image cropper. (See below for more details)

# Adding the header image

# First, open the theme editor in Google forms

Select the theme

# Select Upload photo option

Upload file option

# Crop the image

Crop the image

# Update the color scheme to match the header image

Update colors