Validar identidad CF7 is a WordPress plugin designed to enhance Contact Form 7 by adding a text field specifically for validating Spanish identification numbers such as DNI, NIF, NIE, and CIF. This utility ensures that users enter valid identification formats, providing an error message upon submission if the input does not meet specific criteria. The plugin accepts both uppercase and lowercase letters, enabling flexibility in user input while maintaining strict validation standards.

To implement the validation feature, users can easily create a required or optional text field in their forms using specific tags. For mandatory fields, the tag [text* identidad-nombre] is used, while the optional field can be created with [text identidad-nombre]. This straightforward setup makes it easy for website administrators to ensure that only valid identification numbers are submitted, thereby streamlining the data collection process.