Cardmine is a trading card platform and marketplace for collectors, bringing card discovery, pricing information and buying and selling together. Owned by Cardmine B.V., based in the Netherlands, the company covers Pokémon, Japanese Pokémon cards, Disney Lorcana, One Piece, Magic: The Gathering and Yu-Gi-Oh!, with Dragon Ball Super, Digimon and Flesh and Blood listed as coming soon.

Collectors can search cards, compare marketplace listings, browse sets and track live prices and price history. Cardmine also provides market trends, set insights and card value checkers for several supported games. Sellers can list cards through the marketplace, while buyers can browse current offers, including cards shown with language, condition, finish and price details. The platform highlights secure payments, buyer protection and tools intended to make listing straightforward. Additional services include personal card and collection features, a help center, shipping guidance, fee information and marketplace support. Cardmine also shares set releases, price movements and marketplace news through its email updates and blog, helping users follow changes across the trading card market.