Pre-payment background image sizing on a giving form

Open Online Giving → Campaigns or Online Giving → Forms, select the campaign or form, then go to Giving Experience → Form Settings & Display → Display. Choose the relevant Pre-Payment Form, Payment Form, or Post-Payment Form settings; older interfaces show those as separate tabs.

The pre-payment image uploader accepts JPG, JPEG and PNG and provides background position, overlay color and opacity controls. It explicitly asks administrators to review the actual giving form instead of relying only on the settings preview. This screen does not mean a recommended pixel size. Do not reuse campaign-card, video-thumbnail or header-logo dimensions as the background requirement. Identify the exact image placement/editor before giving dimensions.