“Créer Page” is definitely not correct. You could use:

• Créer une page
• Ajouter une page
• Nouvelle page

Although it is not a “correct” sentence, many people will not be disappointed with it.

As software users can often see “Insérer objet” (insert object) or “Suppr. fichier” (delete file) in many software, you may use this of writing to gain space in your application (this is what I sometimes do although I am native french).

It depends also on the people who will use the software (young people will less notice this mistake than older ones). So, for software, “Créer page” is correct for me.