> For the complete documentation index, see [llms.txt](https://docs.launchpad.heymint.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.launchpad.heymint.xyz/creators/manage-smart-contract/before-deployment/advanced-features/burn-to-mint-feature.md).

# Burn to Mint Feature

Our burn to mint feature is an exciting addition that allows for new tokens to be minted by burning existing NFTs from other collections or contracts. It's important to note that this feature is only available for mint pages hosted by HeyMint, and cannot be used with the mint button embed for external websites.

<figure><img src="/files/0JBwJLhSnUx8rGol0K6Q" alt=""><figcaption><p>Burn to Mint Frontend</p></figcaption></figure>

This feature is incredibly flexible and allows you to burn any number of NFTs from any ERC-721 or ERC-1155 contract to mint any number of NFTs from your contract. For example, you can require burning a single NFT from another contract to mint a single NFT from your contract or you can require burning multiple NFTs from different contracts to mint multiple NFTs from your contract.

Please keep in mind that users must first complete a setApprovalForAll function to authorize your NFT smart contract to transfer NFTs from the collection\[s] to be burned in order for the burn to mint feature to work.<br>

<figure><img src="/files/bPkhU8pDGz20GHh14jwd" alt=""><figcaption><p>setApprovalForAll</p></figcaption></figure>

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