Sorry, but I really wouldn't trust a website that uses Gemini's image models for generating scientific diagrams. The website itself is also vibe-coded. That's not an issue by itself, but there are lots of layout issues visible, see https://i.imgur.com/SidB6pI.png

A bit offtopic: If anyone wants to check whether a specific image is generated by Google models without using Gemini, go to https://images.google.com/, upload the image, click the "About this image" section. It'll say "Made with Google AI" if it was generated with their models.