Depending on how advanced the project is, low fidelity may not be appropriate, especially if the team has begun refining the visual concept of the project.
Usually, a prototype of medium fidelity is digital, with the advantage of being easily shared online.
Medium-fidelity prototypes are usually made from the middle to the end of the project, and in many cases are refined using graphical software such as Photoshop and Sketch app. It is also common to see professionals already working with HTML/CSS in this step. It is interesting to start using branding graphics such as symbols, logos, institutional colors, brand images, or image banks, and so on.
This type of prototype is great for the type of customer ...