I'm using quill editor with vue and I had to install some modules for image resize:

1 Install modules

yarn add quill-image-resize-module --save
yarn add quill-image-drop-module --save

or using npm:

npm install quill-image-resize-module --save
npm install quill-image-drop-module --save

2 Import and register modules

import { ImageDrop } from 'quill-image-drop-module'
import