NFT Metadata Generator

1. Fill in the metadata fields — Enter the NFT name, description, image URL, and optional fields.
2. Add attributes — Click "Add Attribute" to add traits. Each trait has a name, value, display type, and optional max value.
3. Copy or download — Copy the generated JSON to your clipboard or download it as a .json file.
4. Use with your NFT — Upload the JSON to your metadata endpoint (IPFS, Arweave, or centralized server) and reference the URI in your smart contract.

All metadata generation is performed 100% client-side in your browser. No data is sent to any server.

NFT metadata is a JSON document that describes an NFT's properties. It follows the ERC-721 (and ERC-1155) metadata standard, which defines how NFT metadata should be structured so that marketplaces like OpenSea, Rarible, and others can properly display your NFTs.

The standard metadata schema includes fields like name, description, image, and attributes (also called traits). The attributes array allows you to define on-chain properties of your NFT, which marketplaces display as trait badges.

Key metadata fields and their purposes:

• name — The display name of the NFT (e.g., "CyberPunk #1337")
• description — A human-readable description of the NFT
• image — URL to the NFT's image (PNG, GIF, SVG, etc.)
• animation_url — URL to a multimedia attachment (video, audio, 3D model)
• attributes — Array of trait objects with trait_type, value, optional display_type, and max_value
• background_color — Background color to display behind the image (hex without #)

{
    "name": "NFT Name",
    "description": "Description text",
    "image": "https://...",
    "external_url": "https://...",
    "animation_url": "https://...",
    "background_color": "0d0d1a",
    "youtube_url": "https://youtube.com/...",
    "attributes": [
        {
            "trait_type": "Background",
            "value": "Neon City"
        },
        {
            "trait_type": "Power Level",
            "display_type": "number",
            "value": 9000,
            "max_value": 10000
        },
        {
            "trait_type": "Boost",
            "display_type": "boost_percentage",
            "value": 45,
            "max_value": 100
        }
    ]
}

This standard is supported by OpenSea, Rarible, LooksRare, Blur, and most NFT marketplaces.