const myBase64File = "JVBERi0xLjQKJcOkw7zDtsOfCjIgMCBvYmoKPDwvTGVuZ3....."
const buffer = Buffer.from(myBase64File, "base64")
const base64 = buffer.toString("base64")
const myBase64File = "JVBERi0xLjQKJcOkw7zDtsOfCjIgMCBvYmoKPDwvTGVuZ3....."
const buffer = Buffer.from(myBase64File, "base64")
const base64 = buffer.toString("base64")