Allegro rules

Allegro marketplace image rules

3 sourced rules CatalogPrep checks against Allegro listings. Each rule carries an official policy URL and the date we last verified it.

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Source: Official policy sources · Last verified 2026-05-31

Allegro thumbnail images must use a white background

Allegro requires the gallery thumbnail to sit on a white background so listings render consistently across search results and category grids.

Allegro images must meet minimum side length and megapixel limits

Allegro thumbnails need a longer side of at least 400 px and gallery images at least 500 px, with every image capped at 26 megapixels.

Allegro images must not carry text, watermarks, or store logos

Allegro prohibits added text, watermarks, icons, and store logos on gallery and thumbnail images so listings stay neutral and comparable.

Check your Allegro image size

Verify an image meets Allegro's 1600×1600 target and file-size limit before you upload - free, in your browser.