diff --git a/src/Captcha.php b/src/Captcha.php
index e3ba73f..65efa55 100644
--- a/src/Captcha.php
+++ b/src/Captcha.php
@@ -308,7 +308,7 @@ public function create(string $config = 'default', bool $api = false)
         return $api ? [
             'sensitive' => $generator['sensitive'],
             'key' => $generator['key'],
-            'img' => $this->image->encode()->encoded
+            'img' => $this->image->encode()->toDataUri()
         ] : new Response($this->image->encode(), 200, [
             'Content-Type' => 'image/jpeg',
             'Content-Disposition' => 'inline; filename="image.jpg"',