Update README.md

szimek · Dec 20, 2015 · 28827ab · 28827ab
1 parent 0fdf1b2
commit 28827ab
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/README.md b/README.md
@@ -23,8 +23,9 @@ var canvas = document.querySelector("canvas");
 
 var signaturePad = new SignaturePad(canvas);
 
-// Returns signature image as data URL
-signaturePad.toDataURL();
+// Returns signature image as data URL (see https://mdn.io/todataurl for the list of possible paramters)
+signaturePad.toDataURL(); // save image as PNG
+signaturePad.toDataURL("image/jpeg"); // save image as JPEG
 
 // Draws signature image from data URL
 signaturePad.fromDataURL("data:image/png;base64,iVBORw0K...");