diff --git a/src/js/Aladin.js b/src/js/Aladin.js
index d95cc7cc..33696afa 100644
--- a/src/js/Aladin.js
+++ b/src/js/Aladin.js
@@ -2154,15 +2154,16 @@ aladin.on("positionChanged", ({ra, dec}) => {
     };
 
     /**
-     * Return the current view as a data URL (base64-formatted string)
-     * Parameters:
-     * - options (optional): object with attributs
-     *     * format (optional): 'image/png' or 'image/jpeg'
-     *     * width: width in pixels of the image to output
-     *     * height: height in pixels of the image to output
-     *     * logo (optional): boolean to display the Aladin Lite logo
+     * Return the current view as a png data URL (base64-formatted string)
      *
-     * @API
+     * @memberof Aladin
+     *
+     * @param {Object} [options] (optional): object with attributs, options are:
+     *    * format (optional): 'image/png' or 'image/jpeg'
+     *    * width: width in pixels of the image to output
+     *    * height: height in pixels of the image to output
+     *    * logo (optional): boolean to display the Aladin Lite logo
+     * @returns {Promise<string>} The image as a png data URL
      */
     Aladin.prototype.getViewDataURL = async function (options) {
         var options = options || {};
@@ -2182,34 +2183,34 @@ aladin.on("positionChanged", ({ra, dec}) => {
 
     /**
      * Return the current view as a png ArrayBuffer
-     * Parameters :
-     * - withLogo (optional): boolean to display the Aladin Lite logo
      *
-     * @API
+     * @memberof Aladin
+     *
+     * @param {boolean} withLogo Display or not the Aladin Lite logo
+     * @returns {Promise<ArrayBuffer>} The image as a png ArrayBuffer
      */
     Aladin.prototype.getViewArrayBuffer = async function (withLogo) {
         return await this.view.getCanvasArrayBuffer("image/png", null, null, withLogo);
     }
 
     /**
-     * Return the current view as a the desired data type
-     * Parameters :
-     * - dataType: 'url', 'arraybuffer', 'blob'
-     * - imgType: 'image/png', 'image/jpeg'
-     * - width: width in pixels of the image to output
-     * - height: height in pixels of the image to output
-     * - withLogo: boolean to display the Aladin Lite logo
+     * Return the current view as a png Blob
      *
-     * @API
+     * @memberof Aladin
+     *
+     * @param {string} dataType The type of data to return. Can be 'url', 'arraybuffer' or 'blob'
+     * @param {string} imgType The type of image to return. Can be 'image/png' or 'image/jpeg'
+     * @param {boolean} [withLogo] Display or not the Aladin Lite logo
+     * @returns {Promise<any>}
      */
-    View.prototype.getViewData = async function (dataType, imgType, width, height, withLogo=true){
+    Aladin.prototype.getViewData = async function (dataType, imgType, withLogo=true){
         switch (dataType) {
             case "url":
-                return await this.getCanvasDataURL(imgType, width, height, withLogo);
+                return await this.view.getCanvasDataURL(imgType, null, null, withLogo);
             case "arraybuffer":
-                return await this.getCanvasArrayBuffer(imgType, width, height, withLogo);
+                return await this.view.getCanvasArrayBuffer(imgType, null, null, withLogo);
             case "blob":
-                return await this.getCanvasBlob(imgType, width, height, withLogo);
+                return await this.view.getCanvasBlob(imgType, null, null, withLogo);
             default:
                 throw new Error("Unknown data type: " + dataType);
         }