NFTs.sol

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/utils/Counters.sol";

contract MyNFT is ERC721 {
    using Counters for Counters.Counter;
    Counters.Counter private _tokenIds;
    mapping (uint256 => string) private _tokenURIs;

    constructor() ERC721("MyNFT", "NFT") {}

    function createNFT(address recipient, string memory tokenURI) public returns (uint256){
        _tokenIds.increment();
        uint256 newTokenId = _tokenIds.current();
        _mint(recipient, newTokenId);
        _setTokenURI(newTokenId, tokenURI);
        return newTokenId;
    }

    function _setTokenURI(uint256 tokenId, string memory tokenURI) internal virtual {
        require(_exists(tokenId), "ERC721Metadata: URI does not exist");
        _tokenURIs[tokenId] = tokenURI;
    }
}