Loading tools
Loading tools
Loading tool
ERC-721 + ERC-1155, traits builder, CSV bulk, IPFS-ready.
{
"name": "Cool Cat #1",
"description": "A unique cool cat from the collection.",
"image": "ipfs://QmYourCidHere/1.png",
"attributes": [
{
"trait_type": "Color",
"value": "Orange"
},
{
"trait_type": "Rarity",
"value": "Common"
}
]
}An NFT metadata generator produces the JSON file that OpenSea, Magic Eden, Blur, and other marketplaces read to display your token. It contains name, description, image URL, and attributes (traits like Color, Rarity, Strength). Without proper metadata, your NFT shows as a generic image with no traits and no marketplace search.
This generator supports ERC-721 (one-of-one or numbered series) and ERC-1155 (semi-fungible) standards, with a CSV bulk-import path for 10K collections, and IPFS-ready URL hints. All in your browser -your trait data and descriptions stay private.
Yes. Unlimited use, no signup. OpenSea's own metadata standard is the schema; we generate compliant JSON for free.
Yes. Toggle the standard. ERC-721 metadata has name/description/image/attributes. ERC-1155 adds decimals and properties fields.
IPFS pins your image and metadata to a content-addressed network so the NFT can't be lost when your hosting goes down. Without IPFS, an NFT's image disappears if you stop paying for hosting. Use pinata.cloud, nft.storage, or web3.storage.
Yes via CSV import. Each row becomes a metadata JSON. Columns: name, description, image, trait_X for each trait. Download the bundled JSON files.
trait_type appears in OpenSea's attribute filter sidebar (every NFT in your collection groupable by Color, Rarity, etc.). properties is a raw object for app-specific data the marketplace doesn't filter on.
Set tokenURI() to ipfs://<METADATA_CID>/{id}.json (where {id} is replaced by the actual token ID by the contract). For ERC-1155, use the same pattern with id substitution.
PNG, JPEG, GIF, WebP, SVG, MP4 (for animation_url). Most marketplaces prefer PNG/JPEG for the main image and MP4/WebM for animated NFTs.
Yes via the animation_url field. Set image to a static preview (JPEG/PNG) and animation_url to your MP4/WebM/GLB. Marketplaces show the animation in detail view.
No. The generator runs in your browser. Your NFT data, descriptions, traits stay on your laptop. We never see them.
Not in this tool. Use the Token Contract Generator for ERC-721/1155 Solidity scaffolding with OpenZeppelin imports.
ERC-721 + ERC-1155, CSV bulk, IPFS-ready. Free unlimited.
Open the generatorThe NFT Metadata Generator page is built, reviewed, and maintained by the Molixa team. We use the tool we ship and update the docs when the behavior changes.