Wireframes vary a lot in terms of how complex they are. Low fidelity wireframes can be nothing more than a series of labeled boxes scribbled on a sheet of paper. High-fidelity wireframes can be nearly as complex as a finished website or other digital product, complete with some content.

So which is the right level of complexity? The answer, as with virtually any design question, is that it depends.^[1] If the wireframe is going to be used purely for your own iteration process until you find the best design solution, then a low-fidelity, hand-drawn sketch is a great option.

If the wireframe is for a more complex project and/or will be shown to clients or other stakeholders, you may need to create something more complex in order to get your ideas across. For many projects, the right level of complexity will likely fall somewhere in between.