Add a header image and logo from Design > Brand assets. The live preview shows how each asset will look across contest surfaces.
Header image
Use a wide, high-quality image that supports the campaign without placing essential text near the edges. The available space changes between desktop, mobile, popup, and app-block layouts, so review every preview mode.
The Shopify Contest Popup and Contest Form blocks show this header image by default. In either block's theme-editor settings, turn off Show header image when the placement already has campaign artwork or when you want a text-first layout. The setting affects only that popup or form block; it does not remove the asset from the contest or other channels.
Logo
Upload a clear logo with transparent space where appropriate. Use the logo-size control to set it from 24 to 200 pixels, then check both desktop and mobile.
Upload, replace, or remove
- Open the contest editor and choose Design.
- Expand Brand assets.
- Upload the header image or logo.
- Use Change to replace an asset or Remove to clear it.
- Save the contest.
Recommended preparation
- Use a sharp source image and avoid unnecessary compression.
- Keep the most important subject near the center of a header image.
- Prefer a logo that remains legible at small sizes.
- Check color contrast if the asset sits next to text or buttons.
- Preview on mobile before launch.
If an upload fails, confirm the file is a supported web image and below the upload limit, then retry from a stable connection.
See Popup Block and Form Block for channel-specific setup.