Should I get a leather or a fabric sofa?
There is no universal winner between a leather and a fabric sofa; the right call depends on your room and light, which is why seeing each finish in place beats deciding from a swatch.
Leather reflects light, reads cooler and more formal, comes in a narrower palette, and develops character as it ages. Fabric absorbs light, feels warmer and softer underfoot of the eye, and opens up far more colors and textures. The same room can lean either way depending on its walls, floor, and how much daylight it gets.
Previewing a leather version and a fabric version of the sofa on your own room photo shows how each surface behaves in your light and against what you already own. DecorViz lets you try both and compare them directly, so you judge the finish in context rather than from a product shot lit in a studio.
Related answers: seeing a sofa before buying and picking furniture colors for your room.