Extract Public Id

Public Id of a Cloudinary asset is the path to that asset stored in Cloudinary, path-to-image as shown below:

URL format

Public Id doesn't include asset extension or format. For example: an image example.jpg will have public Id example.

You can easily extract the target public Id using the following method:

`extractPublicId(link)`

link:
- Type: String
- Cloudinary asset URL.

import { extractPublicId } from 'cloudinary-build-url'

const publicId = extractPublicId(
    "http://res.cloudinary.com/demo/image/upload/v1312461204/sample.jpg"
  ) //sample