Allegro rule
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.
Audit my Allegro imagesSee all rulesSource: help.allegro.com · Last verified 2026-05-31
What we check
CatalogPrep reads the image dimensions and flags thumbnails under 400 px on the longer side, gallery images under 500 px, or images above the 26 MP ceiling.
How to fix
Resize the image within Allegro's safe display bounds. CatalogPrep upscales to the minimum and downscales oversized images automatically.
Detection summary
- Severity
- warning
- Auto-checkable
- Yes
- Auto-fixable
- Yes
- Manual review
- Not needed
- Last verified
- 2026-05-31