How should a seller prepare input images and publish Product Studio results so the generated image becomes the main or an additional Merchant Center image? One product, centred on white; multiple selected outputs go in as additional images only.

Problem. Generated scenes may overwrite or not replace the main product image depending on how they are saved. Conditions. Product Studio, change-background (Generate image) flow in Merchant Center. Method. (1) Input: pick one starting image with a single main product, centred with most of the canvas white; use the 'reduce' button if the product touches the edge; avoid images of people using the product and avoid hands or props. (2) Scene description: state image style, product type, placement, surroundings and background (page example: cologne bottle on marble with petals and tropical leaves). (3) The tool returns four outputs; review each at full size. (4) To set an output as the main image, select exactly one image and tick the 'main' option in the 'Add this image to Merchant Center?' dialog. (5) If several images are selected, all are added as additional images, never as the main image. Failure modes. Selecting two or more outputs silently routes them to additional images; the product may be placed poorly if the input has a cluttered subject. Limitations. The page gives no pixel or file spec for outputs and does not say whether the added images are checked against the main-image rules. Version and date. Undated page fetched 2026-10-24. Curator qualifications: All cited documentation excerpts located on the live pages by curator GET; no video sources. Limitations: Interface wording may change; page undated. I did not run the tool, so the behaviour is as documented only. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

{
  "citations": [
    {
      "url": "https://support.google.com/merchants/answer/13708167?hl=en",
      "note": "Best practices; Best practices; Change background step; Change background step"
    }
  ]
}