diff --git a/src/imageupload/imageuploadediting.js b/src/imageupload/imageuploadediting.js
index 73949e0e..20fa317f 100644
--- a/src/imageupload/imageuploadediting.js
+++ b/src/imageupload/imageuploadediting.js
@@ -10,10 +10,11 @@
 import Plugin from '@ckeditor/ckeditor5-core/src/plugin';
 import FileRepository from '@ckeditor/ckeditor5-upload/src/filerepository';
 import Notification from '@ckeditor/ckeditor5-ui/src/notification/notification';
+import UpcastWriter from '@ckeditor/ckeditor5-engine/src/view/upcastwriter';
 import { upcastAttributeToAttribute } from '@ckeditor/ckeditor5-engine/src/conversion/upcast-converters';
 
 import ImageUploadCommand from '../../src/imageupload/imageuploadcommand';
-import { isImageType, isLocalImage, wrapImageToFetch } from '../../src/imageupload/utils';
+import { isImageType, isLocalImage, fetchLocalImage } from '../../src/imageupload/utils';
 
 /**
  * The editing part of the image upload feature. It registers the `'imageUpload'` command.
@@ -98,11 +99,9 @@ export default class ImageUploadEditing extends Plugin {
 		// inserted into the content. Then, those images are uploaded once they appear in the model
 		// (see Document#change listener below).
 		this.listenTo( editor.plugins.get( 'Clipboard' ), 'inputTransformation', ( evt, data ) => {
-			const view = editor.editing.view;
-
-			const fetchableImages = Array.from( view.createRangeIn( data.content ) )
+			const fetchableImages = Array.from( editor.editing.view.createRangeIn( data.content ) )
 				.filter( value => isLocalImage( value.item ) && !value.item.getAttribute( 'uploadProcessed' ) )
-				.map( ( value, index ) => wrapImageToFetch( value.item, index ) );
+				.map( value => fetchLocalImage( value.item ) );
 
 			if ( !fetchableImages.length ) {
 				return;
@@ -111,25 +110,21 @@ export default class ImageUploadEditing extends Plugin {
 			evt.stop();
 
 			Promise.all( fetchableImages ).then( items => {
+				const writer = new UpcastWriter();
+
 				for ( const item of items ) {
 					if ( !item.file ) {
 						// Failed to fetch image or create a file instance, remove image element.
-						view.change( writer => {
-							writer.remove( item.image );
-						} );
+						writer.remove( item.image );
 					} else {
+						// Set attribute marking the image as processed.
+						writer.setAttribute( 'uploadProcessed', true, item.image );
+
 						const loader = fileRepository.createLoader( item.file );
 
 						if ( loader ) {
-							view.change( writer => {
-								writer.setAttribute( 'src', '', item.image );
-								writer.setAttribute( 'uploadId', loader.id, item.image );
-							} );
-						} else {
-							view.change( writer => {
-								// Set attribute so the image will not be processed 2nd time.
-								writer.setAttribute( 'uploadProcessed', true, item.image );
-							} );
+							writer.setAttribute( 'src', '', item.image );
+							writer.setAttribute( 'uploadId', loader.id, item.image );
 						}
 					}
 				}
diff --git a/src/imageupload/utils.js b/src/imageupload/utils.js
index fe5d0332..fc61910c 100644
--- a/src/imageupload/utils.js
+++ b/src/imageupload/utils.js
@@ -25,12 +25,11 @@ export function isImageType( file ) {
  * Creates a promise which fetches the image local source (base64 or blob) and returns as a `File` object.
  *
  * @param {module:engine/view/element~Element} image Image which source to fetch.
- * @param {Number} index Image index used as image name suffix.
  * @returns {Promise} A promise which resolves when image source is fetched and converted to `File` instance.
  * It resolves with object holding initial image element (as `image`) and its file source (as `file`). If
  * the `file` attribute is null, it means fetching failed.
  */
-export function wrapImageToFetch( image, index ) {
+export function fetchLocalImage( image ) {
 	return new Promise( resolve => {
 		// Fetch works asynchronously and so does not block browser UI when processing data.
 		fetch( image.getAttribute( 'src' ) )
@@ -38,7 +37,7 @@ export function wrapImageToFetch( image, index ) {
 			.then( blob => {
 				const mimeType = getImageMimeType( blob, image.getAttribute( 'src' ) );
 				const ext = mimeType.replace( 'image/', '' );
-				const filename = `${ Number( new Date() ) }-image${ index }.${ ext }`;
+				const filename = `image.${ ext }`;
 				const file = createFileFromBlob( blob, filename, mimeType );
 
 				resolve( { image, file } );
@@ -57,14 +56,12 @@ export function wrapImageToFetch( image, index ) {
  * @returns {Boolean}
  */
 export function isLocalImage( node ) {
-	return node.is( 'element', 'img' ) && node.getAttribute( 'src' ) &&
-		( node.getAttribute( 'src' ).match( /data:image\/\w+;base64,/g ) ||
-			if ( !node.is( 'element', 'img' ) || node.getAttribute( 'src' ) ) {
-				return false;
-			}
-			
-			return ( node.getAttribute( 'src' ).match( /data:image\/\w+;base64,/g ) ||
-		node.getAttribute( 'src' ).match( /blob:/g ) );
+	if ( !node.is( 'element', 'img' ) || !node.getAttribute( 'src' ) ) {
+		return false;
+	}
+
+	return node.getAttribute( 'src' ).match( /^data:image\/\w+;base64,/g ) ||
+		node.getAttribute( 'src' ).match( /^blob:/g );
 }
 
 // Extracts image type based on its blob representation or its source.