Saleor is an open source commerce platform under the BSD license, built around a GraphQL API. It stores your product images and serves resized copies through its GraphQL API, while your storefront decides how big each image appears. So there is no single theme size to hit. What matters is how large you upload, which limits apply, and which thumbnail sizes your storefront asks for. This page collects what the official Saleor docs and the Saleor 3.23.45 source code say, with the date we checked them, and turns that into settings for clothing photos. We make NotShot, an AI on-model photo tool, so we also cover where on-model images fit.
The settings file in the Saleor 3.23.45 source, the latest Saleor release on GitHub when we checked on 1 November 2026, sets two defaults for image uploads:
Both limits come from environment variables, so a Saleor Cloud project or a custom install may use other values. For on-model clothing photos, JPEG or WebP at a few hundred KB to a few MB stays well inside them.
The Saleor docs page on thumbnails (checked by us on 1 November 2026) explains that product media and product thumbnails accept a size, a sizeRounding and a format:
Because size is the longest side, a portrait photo keeps its shape. The thumbnail code in Saleor 3.23.45 lists the same eight sizes. The docs add that thumbnails are never upscaled: if your upload is smaller than the size requested, Saleor returns it at its original dimensions, and the browser stretches it and makes it look blurry.
The docs suggest requesting a size in device pixels, the displayed width times the device pixel ratio, for example 750 × 2 = 1500 on a retina screen, with sizeRounding set to UP. That request returns a 2048 thumbnail. For clothing, that means:
Thumbnails are made on demand. The docs explain that the first request for a size and format returns a proxy URL, which creates the thumbnail when it is opened, and later requests return the thumbnail directly. In Saleor Cloud, media files are served by a CDN that may cache them for up to 7 days, so a deleted or replaced image can stay reachable at its old URL for that long.
Images are added as product media. The ProductMediaCreateInput reference takes an image file upload or a mediaUrl for external media, plus alt text. Media can be an image or a video. When you add an image by URL, Saleor fetches it in the background, and thumbnail requests return an error until the download finishes. To show the right photos for each color, the variantMediaAssign mutation assigns a product media item to a product variant.
Running another platform too? Compare Odoo eCommerce product image size for clothing, CS-Cart product image size for clothing and OpenCart product image size for clothing. Running Medusa too? See Medusa product image size for clothing. Running Spree too? See Spree Commerce product image size for clothing. For lighting and backdrops, see our clothing product photography guide.
The Saleor docs set no rule against models in product images, so on-model photos can sit next to your packshots and variant images. Check each marketplace's own rules before you sell there. NotShot renders your garment on your own model from the product photo you already have, and every render is checked by an AI judge that compares it with your upload for color, print and cut. Renders below the quality bar are refunded automatically, so you pay for photos that pass the check, not for attempts. Plans are on the pricing page.
