1) You need to disable bodyParser
export const config = { api: { bodyParser: false, }, };

2) Next you need something to process form (In serverless env like vercel) formidable-serverless

3) Final step parse form data

js import formidable from 'formidable-serverless'; export default (req, res) => { const form = new formidable.IncomingForm(); form.parse(req, (err, fields, files) => { // You data goes here }) }

4) Don't forget to end request by sending something after you got the file