How to perform an unsigned image upload from Google Apps Script to Cloudinary

Google Apps Script does not have native support for the FormData object used in JavaScript for handling file uploads. However, you can still upload images to Cloudinary by using a simple JSON object instead.

This article will guide you through the process of uploading images to Cloudinary using Google Apps Script with the UrlFetchApp service.

Prerequisite parameters:

• file:

  • This can be a publicly accessible URL or a base64-encoded string representing an image.
  • Google Apps Script does not support direct file uploads from Google Drive, so you need to retrieve the file's public URL beforehand.

• upload_preset:

  • An Upload Preset is required if you are using unsigned uploads (i.e., without authentication).
  • You can create one in the Cloudinary Console.

• options object:

  • method: 'post' → Specifies that this is a POST request.
  • payload: formData → Sends the form data as JSON in the request body.

• Cloudinary API Endpoint:

  • Replace with your Cloudinary cloud name.
  • The API URL follows this format: https://api.cloudinary.com/v1_1/<cloud_name>/image/upload/

Here is the example code: