diff --git a/src/Image.php b/src/Image.php
index b4d3981..f7def19 100644
--- a/src/Image.php
+++ b/src/Image.php
@@ -7,10 +7,16 @@
 class Image
 {
     protected $pathToImage = '';
+    protected const ALLOWED_PROTOCOLS = ['file'];
 
+    protected const WINDOWS_LOCAL_FILENAME_REGEX = '/^[a-z]:(?:[\\\\\/]?(?:[\w\s!#()-]+|[\.]{1,2})+)*[\\\\\/]?/i';
     public function __construct(string $pathToImage)
     {
-        if (! file_exists($pathToImage)) {
+        if (!$this->isProtocolAllowed($pathToImage)) {
+            throw new InvalidArgumentException(\sprintf('The output file scheme is not supported. Expected one of [\'%s\'].', \implode('\', \'', self::ALLOWED_PROTOCOLS)));
+        }
+
+        if (!file_exists($pathToImage)) {
             throw new InvalidArgumentException("`{$pathToImage}` does not exist");
         }
 
@@ -33,4 +39,22 @@ public function extension(): string
 
         return strtolower($extension);
     }
+    protected function isProtocolAllowed($filename)
+    {
+        if (false === $parsedFilename = \parse_url($filename)) {
+            throw new InvalidArgumentException('The filename is not valid.');
+        }
+
+        $protocol = isset($parsedFilename['scheme']) ? \mb_strtolower($parsedFilename['scheme']) : 'file';
+
+        if (
+            \PHP_OS_FAMILY === 'Windows'
+            && \strlen($protocol) === 1
+            && \preg_match(self::WINDOWS_LOCAL_FILENAME_REGEX, $filename)
+        ) {
+            $protocol = 'file';
+        }
+
+        return \in_array($protocol, self::ALLOWED_PROTOCOLS, true);
+    }
 }
diff --git a/src/OptimizerChain.php b/src/OptimizerChain.php
index 074e991..7bf4018 100644
--- a/src/OptimizerChain.php
+++ b/src/OptimizerChain.php
@@ -64,13 +64,13 @@ public function useLogger(LoggerInterface $log)
     public function optimize(string $pathToImage, string $pathToOutput = null)
     {
         if ($pathToOutput) {
-            copy($pathToImage, $pathToOutput);
-
+            $check = copy($pathToImage, $pathToOutput);
+            if($check == false){
+                throw new InvalidArgumentException("Cannot copy file");
+            }
             $pathToImage = $pathToOutput;
         }
-
         $image = new Image($pathToImage);
-
         $this->logger->info("Start optimizing {$pathToImage}");
 
         foreach ($this->optimizers as $optimizer) {