Marketplace image rules: what changed.
Dated changes to the product image rules of 30 marketplaces, each with its source. The official pages were last read again on 7 October 2026; the table below shows each one.
Free to reuse under CC BY 4.0. Credit: Herofab (herofab.app).
Rules with a date.
Newest first. Each entry is a rule that takes effect, was announced or stopped being enforced on a known day, as its source states. When a later reading of an official page differs from the one before, the change is added here.
- December 2026
Deadline - Zalando Visible on-image labels are not allowed; invisible marking of AI-generated content is strongly recommended and required by December 2026Zalando Partner University — Image guidelines
- 2 August 2026
Law in force - EU AI Act — marking is the provider's duty Article 50(2) of the EU AI Act applies from 2 August 2026: “Providers of AI systems … generating synthetic audio, image, video or text content, shall ensure that the outputs of the AI system are marked in a machine-readable format and detectable as artificially generated or manipulated.”EU AI Act, Article 50
- 23 July 2026
Announced - Amazon — a keyword for AI-generated people On 23 July 2026 Amazon told sellers to tag images and videos that show photorealistic, AI-generated people with the keyword contains-synthetic-performer in the file's embedded metadata, added with an IPTC-compatible editor. Real people, including AI-edited photos of real people, are excluded.CNBC — Amazon makes sellers label AI-generated peopleeWeek — Amazon requires sellers to disclose AI-generated people
- 8 July 2026
Document updated - Cdiscount Size, file and number limits come from Octopia's API documentation, last updated 8 July 2026; the product-image, clothing and shoe rules come from Cdiscount's product-sheet tutorial (V 2.0, 6 November 2017) — check the Seller Zone for the current versionCdiscount (Octopia) — Product management | Octopia API documentation (8 July 2026)
- 1 July 2025
Enforcement changed - bol Images outside the size limits get an error message; since 1 July 2025 bol no longer enforces its other image guidelines, but still enforces the rules on self-promotionbol Partner Platform — These rules apply to your images
Every source, and when it was read.
“Read” is the day the guide's rules were written from the official page. “Read again” is the day the page was fetched again and every figure in the guide was still on it. A dash means the page cannot be fetched automatically, or the guide has no figures to compare; those pages are read by hand when the guide is updated.
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