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Base64 image to multipart/form-data
const base64 = 'data:image/png;base65,....' // Place your base64 url here.
fetch(base64)
.then(res => res.blob())
.then(blob => {
const fd = new FormData();
const file = new File([blob], "filename.jpeg");
fd.append('image', file)
// Let's upload the file
// Don't set contentType manually → https://github.com/github/fetch/issues/505#issuecomment-293064470
const API_URL = 'https://example.com/add_image'
fetch(API_URL, {method: 'POST', body: fd)
.then(res => res.json())
.then(res => console.log(res))
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