diff --git a/RestControllers/postsController.php b/RestControllers/postsController.php
index 025b75f..58134e8 100644
--- a/RestControllers/postsController.php
+++ b/RestControllers/postsController.php
@@ -154,21 +154,13 @@ class postsController {
 			if(!check_post_file("image"))
 				Rest_fatal_error(400, "An error occured while receiving image !");
 
-			//Generate target file name
-			$target_userdata_folder = prepareFileCreation(userID, "imgpost");
-			$target_file_path = $target_userdata_folder.generateNewFileName(path_user_data($target_userdata_folder, true), "png");
-			$target_file_sys_path = path_user_data($target_file_path, true);
-
-			//Try to resize, convert image and put it in its new location
-			if(!reduce_image($_FILES['image']["tmp_name"], $target_file_sys_path, 2000, 2000, "image/png")){
-				//Returns error
-				Rest_fatal_error(500, "Couldn't resize sent image !");
-			}
+			//Save post image
+			$file_path = save_post_image("image", userID, "imgpost", 2000, 2000);
 
 			//Save image information
-			$file_type = "image/png";
-			$file_size = filesize($target_file_sys_path);
-			$file_path = $target_file_path;
+			$file_sys_path = path_user_data($file_path, true);
+			$file_type = mime_content_type($file_sys_path);
+			$file_size = filesize($file_sys_path);
 		}
 
 		//For YouTube posts
diff --git a/functions/requests.php b/functions/requests.php
index 1430cf7..6716c60 100644
--- a/functions/requests.php
+++ b/functions/requests.php
@@ -417,4 +417,31 @@ function getPostContent($name){
 	//Return new content
 	return $content;
 
+}
+
+/**
+ * Save an image in user data directory from a POST request
+ * 
+ * @param string $fieldName The name of the POST field
+ * @param int $userID The ID of the user making the request
+ * @param string $folder The target folder in the user data directory
+ * @param int $maxw The maximum width of the image
+ * @param int $maxh The maximum height of the image
+ * @return string The path of the image (quit the script in case of failure)
+ */
+function save_post_image(string $fieldName, int $userID, string $folder, int $maxw, int $maxh) : string {
+
+	$target_userdata_folder = prepareFileCreation($userID, $folder);
+	$target_file_path = $target_userdata_folder.generateNewFileName(path_user_data($target_userdata_folder, true), "png");
+	$target_file_sys_path = path_user_data($target_file_path, true);
+
+	//Try to resize, convert image and put it in its new location
+	if(!reduce_image($_FILES[$fieldName]["tmp_name"], $target_file_sys_path, $maxw, $maxh, "image/png")){
+		//Returns error
+		Rest_fatal_error(500, "Couldn't resize sent image !");
+	}
+
+	//Return image path
+	return $target_file_path;
+
 }
\ No newline at end of file