Product photos ready for Heureka.
Virtual try-on on a white studio background shows clothing worn on a model, the presentation Heureka.cz's fashion conditions prefer, while background removal to white or product studio on white shows shoes on their own; generation is briefed to keep each product's colour, shape, material, logos and details. 2K and 4K output stays within the 4,096 × 4,096-pixel maximum, but a 4K file can exceed the 2,000 kB limit, so the seller compresses or resizes it before it goes into the feed.
What Heureka asks for, covered.
Clothing on a figure
Virtual try-on on a white studio background shows garments worn rather than folded or hung, as Heureka.cz recommends for fashion.
White, not transparent
Background removal to white matches Heureka's preference, since its feed specification says images should not have a transparent background.
Watermark-free output
Images made on a plan or with a credit pack carry no watermark, which Heureka blocks and which keeps Marketplace offers out of the TOP position.
Main image
- Background colour
- White background (recommended)
Source: Heureka — Jak správně posílat obrázky · checked 27 September 2026
All Heureka image requirements
Source: Heureka — Jak správně posílat obrázky. Checked 27 September 2026.
- Size
- At least 20 × 50 or 50 × 20 pixels and 30 kB, with at least 175 × 175 pixels recommended; at most 4,096 × 4,096 pixels and 2,000 kB
- Formats
- JPEG and PNG are supported on both official pages; the XML feed specification also lists WebP and BMP, while the image help page says only .jpeg, .png and .jpg are currently supported
- Background
- Ideally white; the XML feed specification adds that an image should not have a transparent background
- Clothing and shoes
- Heureka.cz's fashion conditions require a quality image in the matching colour for every colour variant and recommend 160,000 pixels (about 400 × 400) or more; clothing should not be shown folded or hung but ideally on a figure, and a shoe image should show only the shoes
- Not allowed
- A watermark, a discount or bonus, a specific seller's logo, or any highlight of the product's strengths, awards included; such images are blocked
- Heureka Marketplace
- A shop in Heureka Marketplace that sends watermarked images does not appear in the TOP position on the product card, even with the best offer; it is shown only in the price comparison
- Feed
- The main image goes in IMGURL and further views, such as another angle or the whole package, in IMGURL_ALTERNATIVE; a new image needs a new URL
Heureka, answered.
What size should Heureka product images be?
Heureka feed images: at least 20 × 50 px and 30 kB, 175 × 175 px recommended, at most 4,096 × 4,096 px and 2,000 kB; ideally white, not transparent.
Can I check my images before uploading?
Yes. The free image size checker reads each file in your browser and tests it against these rules; the image is not uploaded.
Where do these figures come from?
From Heureka — Jak správně posílat obrázky, read on 27 September 2026. Marketplaces update their rules; the official page is the final reference.
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