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How to Upload and Store Files with Vercel

Uploading and storing files from the browser (e.g. images) is a common requirement for applications. If you are using a Headless CMS, it might offer file storage built-in. Otherwise, you'll need a file storage provider.

When dealing with large files or images, uploading using a presigned POST helps shift processing from your server to your provider. For example, you can:

  1. Create a Serverless Function to return a presigned URL.
  2. From the front-end, call your Serverless Function to get the presigned POST URL.
  3. Allow the user to upload a file on the front-end.
  4. Forward the file to the POST URL.

The following guide and project show Next.js applications using presigned URLs to upload images:

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