SVG to PNG from contract

convert.js

const Web3 = require('web3');
const { convert } = require('convert-svg-to-png');
const fs = require('fs');

/* this assumes you have: 
  - an Infura account
  - a smart contract with a read method "tokenSVG" that takes one argument "tokenID" and returns the SVG content as a string
*/
const web3 = new Web3(new Web3.providers.HttpProvider('https://mainnet.infura.io/v3/'+YOUR_API_KEY));
const abi = YOUR_ABI; 
const address = YOUR_CONTRACT_ADDRESS;

const contract = new web3.eth.Contract(abi, address)

async function getSVG(id) {
  let result = await contract.methods.tokenSVG(id).call(); 

  let png = await convert(result, {scale:2}); // output PNGs are twice as big as base SVG

  fs.writeFile('png/'+id+'.png', png, err => {
    if (err) {
      console.error(err);
    }
    else { 
      console.log("Wrote "+id+" to file"); 
    }
  });
}

for(var i=0;i<...;i++) { 
  getSVG(i); 
}