diff --git a/PlagScan/API.php b/PlagScan/API.php
index bb222cb4a67b0f642c291e85f43233d23b7531be..9a596c3fe1095c2a6a0849a3bd7b63b1c8155f44 100644
--- a/PlagScan/API.php
+++ b/PlagScan/API.php
@@ -52,15 +52,11 @@ class API
      */
     public function request(string $endPoint, string $requestType, string $accessToken = '', array $data = [])
     {
-
         $ch = curl_init();
-
         $url = $this->connection . '/' . $endPoint;
-
         if ($accessToken) {
             $url .= '?access_token=' . $accessToken;
         }
-
         if ($requestType === 'GET' || $requestType === 'PATCH') {
             foreach ($data as $key => $value) {
                 $url .= '&' . $key . '=' . $value;
@@ -70,21 +66,21 @@ class API
             }
             $data = [];
         }
-
         $curlopt = [
             CURLOPT_URL => $url,
             CURLOPT_RETURNTRANSFER => 1,
             CURLOPT_CUSTOMREQUEST => $requestType,
         ];
-
         if (!empty($data)) {
-            $curlopt = [CURLOPT_POSTFIELDS => $data] + $curlopt;
+            if(isset($data['fileUpload'])){
+                $curlopt = $this->createFileDataParams($data) + $curlopt;
+            } else {
+                $curlopt = [CURLOPT_POSTFIELDS => $data] + $curlopt;
+            }
         }
         curl_setopt_array($ch, $curlopt);
-
         $response = curl_exec($ch);
         curl_close($ch);
-
         $response = json_decode($response, true) ?? $response;
         if (isset($response['data'])) {
             return $response['data'];
@@ -94,4 +90,40 @@ class API
         }
         return $response;
     }
+
+    /**
+     * Creates a string for fileuploads.
+     *
+     * @param array $data
+     * @return array
+     */
+    private function createFileDataParams(array $data){
+        $string = "";
+        $id = uniqid();
+        foreach ($data as $key => $param) {
+            if ($key !== 'fileUpload') {
+                $string .=
+                    "---------------$id\r\n"
+                    . "Content-Disposition: form-data; name=\"$key\"\r\n"
+                    . "\r\n$param\r\n";
+            }
+        }
+        $fn = end(explode('/',$data['fileUpload']));
+        $mime = mime_content_type($data['fileUpload']);
+        $content = file_get_contents($data['fileUpload']);
+        $string .=
+            "---------------$id\r\n"
+            . "Content-Disposition: form-data; name=\"fileUpload\"; filename=\"$fn\"\r\n"
+            . "Content-Type: $mime\r\n"
+            . "Content-Transfer-Encoding: binary\r\n"
+            . "\r\n$content\r\n"
+            . "---------------$id--\r\n";
+        return [
+            CURLOPT_POSTFIELDS => $string,
+            CURLOPT_HTTPHEADER => [
+                "Content-Type: multipart/form-data; boundary=-------------$id",
+                "Content-Length: " . strlen($string)
+            ]
+        ];
+    }
 }
\ No newline at end of file