diff --git a/src/Wandu/Validator/Testers/FileSizeTester.php b/src/Wandu/Validator/Testers/FileSizeTester.php
new file mode 100644
index 0000000..4b803d6
--- /dev/null
+++ b/src/Wandu/Validator/Testers/FileSizeTester.php
@@ -0,0 +1,28 @@
+<?php
+
+namespace Wandu\Validator\Testers;
+
+use Wandu\Validator\Contracts\Tester;
+
+class FileSizeTester implements Tester
+{
+    /** @var int */
+    protected $max;
+    
+	/**
+     * @param int $max
+     */
+    public function __construct($max)
+    {
+        $this->max = $max;
+    }
+	
+    /**
+     * {@inheritdoc}
+     */
+    public function test($data, $origin = null, array $keys = []): bool
+    {
+        return (  $this->max > $data );
+    }
+}
+