Limitations on Rich Text Area Fields | Salesforce
Limitations on Rich Text Area Fields
The mobile application treats rich text area fields like long-text area fields, which don’t support formatted HTML content or images. The mobile application truncates rich text area fields at 1,000 characters, which includes HTML markup. Administrators should consider removing rich text area fields from mobile page layouts. If a mobile user edits a rich text area field that contains an existing text entry longer than 1,000 characters, the mobile application truncates the text in the field.