angular download image base64
//1 step
const convertBase64ToFile = (base64String, fileName) => {
let arr = base64String.split(',');
let mime = arr[0].match(/:(.*?);/)[1];
let bstr = atob(arr[1]);
let n = bstr.length;
let uint8Array = new Uint8Array(n);
while (n--) {
uint8Array[n] = bstr.charCodeAt(n);
}
let file = new File([uint8Array], fileName, { type: mime });
return file;
}
//2 step
npm i --save-dev @types/file-saver
//3 step
import { saveAs } from 'file-saver';
//4 step
const downloadBase64Data = (base64String, fileName) => {
let file = convertBase64ToFile(base64String, fileName);
saveAs(file, fileName);
}