1. A correction to the old version of this article
This post used to be titled "How to Boost Conversion Rates by 40%" and led with two figures: 40% higher conversion from listing infographics, and 25% fewer returns from clear specification graphics. Neither came with a source, and both belong to the same set of numbers that agencies selling listing design quote to each other. They are gone. The mechanism they were gesturing at is real and is described below; the percentages were not ours to assert.
2. Where these images actually sit
A marketplace listing gallery has a main image and a run of secondary ones. The main image is not where an infographic goes: Amazon requires it to be the product itself on a plain white background with no added text, logos, borders or graphics, and putting a feature callout there risks the listing being suppressed rather than merely performing badly. Infographics belong in the secondary slots, and the early ones matter most, because that is where a shopper who is still deciding will look before scrolling to the description. Image requirements are revised periodically, so check the current version in Seller Central rather than trusting any third-party page, including this one.
3. The four kinds worth making
Feature callouts: the three to five things worth saying, one line each — three that matter beat eight that fill the frame. A comparison: this model against the one it replaces, or against the obvious alternative, with the same rows down every column including the one where the cheaper option wins. An assembly or how-it-works sequence: the highest-value graphic for anything that arrives flat-packed, because it pre-empts the review that begins "impossible to put together". And a dimension guide — which is the one you cannot make here, covered below.
4. The graphic this tool cannot make
A dimension guide is a photograph of the product with measurement arrows and leader lines drawn over it. That is annotation work and it needs an image editor or a designer; there is no arrow or callout-over-photo tool here, and it is better to say so than to let you discover it after signing up. What this composes is the text-and-data side of a listing — features, comparisons, steps and figures — as a sheet with real, selectable text. Make the size guide elsewhere and use this for the other three.
5. The sizes, exactly
Marketplace galleries are square, and larger than sellers expect. Here are the real numbers rather than a vague instruction: a square sheet composes at 1080 × 1080 and exports at double that on the free plan, 2160 × 2160, or triple on a paid one, 3240 × 3240. Both sit comfortably above the resolution at which Amazon switches zoom on, and above the 2000 × 2000 that seller guidance and Etsy both tend to recommend. Marketplace minimums change; ours do not, so check theirs and compare.
6. Use your own photography
Your own product shot can sit in the sheet alongside the callouts or the comparison — images go in at up to 8MB each. There is no generated photography here and no background removal, which for a listing is the right way round: the product in the picture has to be the thing that arrives in the box, and a shopper who feels the images oversold it leaves a review saying so.
7. Scaling it across a catalogue
For a range rather than a single product, the thing that saves the most time is not a template but consistency: save a brand kit once and every sheet afterwards is drawn in the same palette, typeface and logo, so a category page reads as one range instead of forty unrelated images. Write the feature list per product and let the layout stay fixed — the variation a shopper values is in the content, not in the design changing between listings.