It depends on the level of the learner and the type of resource that is being used. They may already know the word from the image, but not recognize the word written down.
For the interactive flashcards in the phonics packs, encourage your learner to blend the word first. They can then check by listening to the audio.
For the interactive flashcards in the themed packs, some of the vocabulary is more challenging so the student might need to hear the word first.
The main aim is to identify the word from the image and pronounce it correctly.