Blog · 9 min read · August 20, 2026

I tried 7 furniture visualizers on the same sofa. Here is what each one showed me

I gave seven visualizer tools the same job: one photo of my living room and a 224 cm IKEA LILLEHEM sofa I was deciding on. Two of the seven placed it at its listed size. One restyled the whole room and drew a sofa nobody sells. The rest produced a picture that looked plausible at whatever size the AI felt like. Full notes on each below, with prices and signup walls.

The test

One room photo, shot from chest height, doorway and radiator visible. One product: the LILLEHEM 3-seat modular sofa, 224 × 73 cm by its listing. The question every tool had to answer: what does this exact sofa look like against my wall, and does the picture tell me whether it fits? I also noted what each tool asked of me before showing anything: an account, a card, an app install.

Disclosure up front: Roomephant is our own tool, and it goes first. Judge it by the same three columns as the rest.

Roomephant

Paste the product link, upload the photo, wait about twenty seconds. The sofa arrived at its listed 224 cm: it reached the radiator, exactly as the tape measure said it would. The size chip on the result shows the listing dimensions and a “fits” check against the wall. It also swapped out the old sofa standing in the photo. Free, no account. The scale method and its ~6% error are published on the methodology page, so you don’t have to take the picture’s word for it.

IKEA Kreativ

The other tool that truly knows the size. It scans your room into a measured 3D replica inside the IKEA app, erases your furniture and places catalog items at real scale. The scan takes a few minutes and several passes, and it lives behind an IKEA account. The hard limit: my sofa was IKEA, so it worked; the moment your shortlist includes Amazon or Article, Kreativ has nothing to say. Full comparison.

RoomGPT

RoomGPT answers a different question. It took my room and returned a nicer room: new sofa, new rug, new lamps, none of them purchasable. As inspiration it’s genuinely fun. As an answer to “will this LILLEHEM fit” it never engaged with the sofa at all. Comparison here.

DecorViz

Closest in spirit: your room stays your room and a product image lands in it. But it takes a product photo, not a link, and it never asks how big the item is. My sofa came out noticeably narrower than 224 cm, which is exactly the failure that costs money. Signup required, 2 free previews lifetime. Comparison here.

DressMyCrib

Same composite approach: product image plus room photo, account first. The render looked good and the sofa landed at a believable size, believable being the operative word, since no dimension from the listing is ever read. For style questions it’s fine. For fit questions it’s a coin toss you can’t verify.

RoomCanvas

A Chrome extension: one click on the product page and the item is composited into your saved room photo. The convenience is real and it also replaces your existing furniture. Scale is described as “realistic” with no numbers and no method behind the word, and the free tier is 3 previews a month before $9.99/month, behind an account. Full comparison.

Pixelcut

A mobile design app with object tools rather than a purpose-built try-on. You can cut the sofa out of the listing and place it in your photo by hand, which means the size is whatever your thumb decides. It proved the point of this test better than any other tool: the result looked completely convincing and was 30 cm off.

The scoreboard

What I’d actually use

If everything on your shortlist is IKEA, Kreativ is excellent and you should use it. For everything else the split is simple: tools that read the listing’s dimensions can answer “will it fit”, tools that don’t can only answer “how might it look”. Of the seven, only two read the numbers. The longer version of this comparison, with three more tools, lives at RoomGPT alternatives.

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