Should I get a floor lamp or a table lamp?
A floor lamp and a table lamp light a corner in different ways and take up space differently, so seeing each in the spot helps you choose.
A floor lamp stands on its own, frees up any surface nearby, and adds a tall vertical line that fills empty corners and reaches light over a sofa or chair. A table lamp needs a surface to sit on, lands at eye level beside a seat, and layers a warmer, lower pool of light, but it claims part of the table it stands on. The corner and whether you have a surface usually decide it.
Seeing each in place shows how the form reads and how the light falls in that part of the room. DecorViz lets you preview a floor lamp, then a table lamp, on the same room photo and compare. The previews show the silhouette and how it sits beside your furniture.
Related answers: seeing a floor lamp in your room and seeing a table lamp in your room.