Key features of an NFT marketplace include user registration, crypto wallet integration, NFT minting, listing management, bidding, and secure payments. Advanced features involve royalty management, multi-chain support, gas fee optimization, and smart contract automation. A strong search and filter system improves asset discoverability, while creator dashboards help track sales and earnings. Security features such as encryption, fraud detection, and audit-ready smart contracts are critical. Admin panels enable platform owners to manage users, content, and commissions. Social sharing, auction types, and analytics further enhance engagement. Together, these features create a seamless, scalable, and secure NFT marketplace experience.