Smartist

Smartist starts with a photograph of the artwork and its dimensions. Crop the image, choose a room and adjust the frame or mat around it. For a client's own interior, select the wall's corners, enter its width and choose the shadow position before adding the art. That measured wall provides more useful context than enlarging a painting until it fills a decorative scene.

Automatic proportions preserve the relationship between the entered dimensions and the room. While that setting is on, free scaling on the wall is disabled. Export lets you choose an image size, reposition or crop the composition, then save to the device or share to another app. The documented maximum is 3840 × 2400 pixels.

The free plan includes five interiors and watermarked exports. Pro removes the watermark and opens the larger room library and advanced controls, with a seven-day trial advertised. Photos supplied by Smartist may be used commercially, including modified presentations, but cannot be collected into a competing service. An optional account supports syncing artwork between devices; rights to uploaded artwork remain with its owner.