Form text length includes HTML and URLs

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 Form Text editor limits stored text to 500 characters, including tags and link URLs. This is not a visible-character count. Shorten copy, use an approved maintained shorter destination, or link to a page containing the longer detail. Preserve valid links and preview; previously saved longer text does not mean a supported way around current input limits.