UploadAdapter (upload)



Upload adapter interface used by the file repository to handle file upload. An upload adapter is a bridge between the editor and server that handles file uploads. It should contain a logic necessary to initiate an upload process and monitor its progress.

Learn how to develop your own upload adapter for CKEditor 5 in the "Custom upload adapter" guide.



  • abort()

    Aborts the upload process. After aborting it should reject promise returned from upload().

  • upload() → Promise.<Object>

    Executes the upload process. This method should return a promise that will resolve when data will be uploaded to server. Promise should be resolved with an object containing information about uploaded file:

    	default: 'http://server/default-size.image.png'

    Additionally, other image sizes can be provided:

    	default: 'http://server/default-size.image.png',
    	'160': 'http://server/size-160.image.png',
    	'500': 'http://server/size-500.image.png',
    	'1000': 'http://server/size-1000.image.png',
    	'1052': 'http://server/default-size.image.png'

    NOTE: When returning multiple images, the widest returned one should equal the default one. It is essential to correctly set width attribute of the image. See this discussion: for more information.

    Take a look at example Adapter implementation and createUploadAdapter method.



    Promise that should be resolved when data is uploaded.