JavaScriptCollection
diff --git a/‎plugins/addimage.js‎
Lines changed: 10 additions & 2 deletions b/‎plugins/addimage.js‎
Lines changed: 10 additions & 2 deletions
@@ -413,6 +413,11 @@
 	 * Async method using Blob and FileReader could be best, but i'm not sure how to fit it into the flow?
 	 */
 	jsPDFAPI.arrayBufferToBinaryString = function(buffer) {
+		if('TextDecoder' in window){
+			var decoder = new TextDecoder('ascii');
+			return decoder.decode(buffer);
+		}
+
 		if(this.isArrayBuffer(buffer))
 			buffer = new Uint8Array(buffer);
 
@@ -586,8 +591,11 @@
 				 * to TypedArray - or should we just leave and process as string?
 				 */
 				if(this.supportsArrayBuffer()) {
-					dataAsBinaryString = imageData;
-					imageData = this.binaryStringToUint8Array(imageData);
+					// no need to convert if imageData is already uint8array
+					if(!(imageData instanceof Uint8Array)){
+						dataAsBinaryString = imageData;
+						imageData = this.binaryStringToUint8Array(imageData);
+					}
 				}
 
 				info = this['process' + format.toUpperCase()](