diff --git a/src/downloader.js b/src/downloader.js
index c1020c4b..4cfa4e78 100644
--- a/src/downloader.js
+++ b/src/downloader.js
@@ -12,7 +12,7 @@ export default class Downloader {
    */
   constructor({ config, onDownload, onError }) {
     this.config = config;
-    this.onDownload = onDownload
+    this.onDownload = onDownload;
     this.onError = onError;
   }
 
diff --git a/src/index.js b/src/index.js
index c4273c10..d700f637 100644
--- a/src/index.js
+++ b/src/index.js
@@ -63,9 +63,10 @@ import { IconAddBorder, IconStretch, IconAddBackground, IconPicture } from '@cod
  * @property {object} additionalRequestHeaders - allows to pass custom headers with Request
  * @property {string} buttonContent - overrides for Select File button
  * @property {object} [uploader] - optional custom uploader
- * @property {object} [downloader] - optional custom downloader
  * @property {function(File): Promise.<UploadResponseFormat>} [uploader.uploadByFile] - method that upload image by File
  * @property {function(string): Promise.<UploadResponseFormat>} [uploader.uploadByUrl] - method that upload image by URL
+ * @property {object} [downloader] - optional custom downloader
+ * @property {function(string): Promise.<string>} [downloader.download] - method that download image by data key
  */
 
 /**
@@ -155,7 +156,7 @@ export default class ImageTool {
       buttonContent: config.buttonContent || '',
       uploader: config.uploader || undefined,
       actions: config.actions || [],
-      downloader: config.downloader || undefined
+      downloader: config.downloader || undefined,
     };
 
     /**
@@ -190,7 +191,7 @@ export default class ImageTool {
       config: this.config,
       onDownload: (url) => this.onDownload(url),
       onError: this.downloadingFileError,
-    })
+    });
 
     /**
      * Set saved state
@@ -396,7 +397,7 @@ export default class ImageTool {
     this._data.file = file || {};
 
     if (file && file.url) {
-      this.downloader.download(file.url)
+      this.downloader.download(file.url);
     }
   }
 
@@ -451,11 +452,11 @@ export default class ImageTool {
 
   /**
    * File downloading callback, fills file data into image
-   * 
+   *
    * @param {*} url - file url after downloading
    */
   onDownload(url) {
-    this.ui.fillImage(url)
+    this.ui.fillImage(url);
   }
 
   /**
diff --git a/src/ui.js b/src/ui.js
index d63cfe08..9676a071 100644
--- a/src/ui.js
+++ b/src/ui.js
@@ -249,4 +249,3 @@ export default class Ui {
     this.nodes.wrapper.classList.toggle(`${this.CSS.wrapper}--${tuneName}`, status);
   }
 }
-
diff --git a/src/uploader.js b/src/uploader.js
index bfa6e2a5..d42e96d4 100644
--- a/src/uploader.js
+++ b/src/uploader.js
@@ -176,4 +176,3 @@ export default class Uploader {
     });
   }
 }
-