Base64 to Url

base64ToURL.js

function base64ToUrl (b64Data, type = 'image/png', sliceSize = 512) {
  const byteCharacters = atob(b64Data);
  const byteArrays = [];
  const nByteCharacters = byteCharacters.length;
  for (let offset = 0; offset < nByteCharacters; offset += sliceSize) {
    const slice = byteCharacters.slice(offset, offset + sliceSize);
    const byteNumbers = new Array(slice.length);
    for (let i = 0; i < slice.length; i++) {
      byteNumbers[i] = slice.charCodeAt(i);
    }
    const byteArray = new Uint8Array(byteNumbers);
    byteArrays.push(byteArray);
  }
  const blob = new Blob(byteArrays, {type: type});
  return URL.createObjectURL(blob);
}