Low-fidelity wireframes are quick — often even hand-drawn — sketches that can make your ideas more tangible. Their goal is to focus on the basic UI structure without diving into details, which is reflected in their look. Low-fidelity wireframes are usually black and white, and they show UI elements like boxes and lines without detailed annotations.

Think of low-fidelity wireframes as your rough draft — it's not the final product but rather a place to start. Their purpose is to help shape the product in the early stages of development and ensure usability before further design and development take place. Low-fidelity wireframes don't take much work, but they'll spare a lot of extra effort down the road.