Nodejs Download High Quality Base64 May 2026

Base64 strings often start with a prefix like data:image/png;base64, . This must be removed before decoding.

const axios = require('axios'); async function downloadToBase64(url) { const response = await axios.get(url, { responseType: 'arraybuffer' }); const base64 = Buffer.from(response.data, 'binary').toString('base64'); return `data:${response.headers['content-type']};base64,${base64}`; } Use code with caution. How to Save ("Download") a Base64 String to a File nodejs download base64

It is critical to set the response type to arraybuffer or null so the data isn't corrupted by default string encoding. Base64 strings often start with a prefix like