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NFT Metadata Builder

Verified

by Community

Creates properly formatted metadata JSON files for NFTs following ERC-721 and ERC-1155 standards. Supports on-chain and off-chain metadata, IPFS URIs, trait generation, and collection-level metadata for marketplaces like OpenSea.

nftmetadataerc721erc1155opensea

NFT Metadata Builder

Generate standards-compliant NFT metadata JSON for ERC-721 and ERC-1155 tokens, optimized for major marketplaces.

Usage

Describe your NFT collection and get properly formatted metadata JSON with traits, images, and collection info.

Examples

  • "Generate metadata for a 10k PFP collection with rarity traits"
  • "Create ERC-1155 metadata for a game items collection"
  • "Build OpenSea-compatible collection metadata"

Guidelines

  • Follow the official ERC-721 and ERC-1155 metadata standards
  • Include all required fields for OpenSea compatibility
  • Use proper IPFS URI formatting for decentralized storage
  • Generate balanced trait distributions for rarity
  • Validate JSON output against marketplace requirements

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