standard image upload button

build integration

https://docs.ckeditor.com/ckeditor5/latest/builds/guides/development/custom-builds.html

npm install ckeditor5-simple-upload

add this plugin and remove the ckfinder and easyimage plugins

// build-config.js

module.exports = {
	// ...
	
	plugins: [
        '@ckeditor/ckeditor5-essentials/src/essentials',
        // ...

        //'@ckeditor/ckeditor5-adapter-ckfinder/src/uploadadapter',
        //'@ckeditor/ckeditor5-easy-image/src/easyimage',

        'ckeditor5-simple-upload/src/simpleupload'

        // ...
    ],

    // ...

    config: {
        toolbar: {
            items: [
                'headings',
                'bold',
                'italic',
                'imageUpload',
                'link',
                'bulletedList',
                'numberedList',
                'blockQuote',
                'undo',
                'redo'
            ]
        },
        // ...
    }
}
        

configuration

ClassicEditor.create(document.querySelector( '#editor' ), {
    simpleUpload: {
        uploadUrl: 'http://127.0.0.1/my-upload-endpoint'
    }
})

backend

the endpoint will receive a file named upload and should return the image url

success response :

{
    "uploaded": true,
    "url": "http://127.0.0.1/uploaded-image.jpeg"
}

failure response :

{
    "uploaded": false,
    "error": {
        "message": "could not upload this image"
    }
}