For marketplace resellers running AI image workflows in 2026, the safe pattern across Marktplaats, Vinted, and Etsy is original photography of the actual item with light AI enhancement (lighting, contrast, background cleanup) only. AI-generated listing imagery and heavy enhancement that produces consistent visual fingerprints across listings trigger Marktplaats's photo-fingerprint deduplication (most aggressive), Vinted's image-similarity penalty for the resale-of-resold pattern, and Etsy's Creativity Standards on AI-generated imagery in handmade categories. The five-rule safe workflow: original photography of every item, light AI enhancement only, fresh photography per relisting, per-platform disclosure where required, and impression-to-view ratio tracking as the leading indicator of algorithm-induced ranking suppression.

Image-specific sister to OPS-046 (listing-copy workflow). Marktplaats-led ordering (NL/EU underserved cohort) per competitive-landscape review. Cohort: marketplace resellers across Etsy crafts, Marktplaats secondhand, Vinted clothing. Cadence 60-day. Trigger conditions: platform-level policy change at Marktplaats, Vinted, or Etsy on AI imagery; EU AI Act Article 50 transparency obligations imposing watermarking requirements on marketplace listings; industry-standards convergence on AI-image provenance signals (C2PA Content Credentials adoption at platform level). Sister claims: OPS-046 (listing-copy workflow), OPS-041 (broader platform-algorithm-AI-content piece).