by Faisal Ahammad on WordPress.org
Adds readonly (uneditable) fields to Gravity Forms, allowing you to display information users cannot change.

Easily make any supported field read-only with a single checkbox. Here, the 'Name' field is being made read-only.
Easily add a universal “Read Only” option to any Gravity Forms field. This plugin adds a checkbox to every supported field in the Gravity Forms editor, allowing you to make any field read-only on the frontend. Includes a tooltip warning to avoid using required or merge-tag default values with read-only fields.