A high-fidelity wireframe is more visual and interactive than a low-fidelity wireframe. Unlike the low-fi wireframe, a high-fi wireframe will include all the real content, copy, images, and branding. This makes it helpful for testing the user experience. It also provides more detail about the technical aspects of the app or website. Because it’s more advanced in its design, it’s best suited to the advanced stages of the creation process.