diff --git a/module_index.json b/module_index.json
index 9d2a5c6..9ac9942 100755
--- a/module_index.json
+++ b/module_index.json
@@ -337,7 +337,7 @@
         "version": "0.10",
         "author": "Emanuil Rusev & Starbeamrainbowlabs",
         "description": "An upgraded (now default!) parser based on Emanuil Rusev's Parsedown Extra PHP library (https:\/\/github.com\/erusev\/parsedown-extra), which is licensed MIT. Please be careful, as this module adds some weight to your installation.",
-        "lastupdate": 1571603632,
+        "lastupdate": 1571604819,
         "optional": false,
         "extra_data": {
             "Parsedown.php": "https:\/\/raw.githubusercontent.com\/erusev\/parsedown\/fe7a50eceb4a3c867cc9fa9c0aa906b1067d1955\/Parsedown.php",
diff --git a/modules/parser-parsedown.php b/modules/parser-parsedown.php
index 1def460..5e084cc 100644
--- a/modules/parser-parsedown.php
+++ b/modules/parser-parsedown.php
@@ -59,7 +59,32 @@ register_module([
 				http_response_code(400);
 				header("content-type: image/png");
 				imagepng(errorimage("Error: No source text \nspecified."));
+				exit();
 			}
+			
+			if(!isset($_GET["language"])) {
+				http_response_code(400);
+				header("content-type: image/png");
+				imagepng(errorimage("Error: No external renderer \nlanguage specified."));
+				exit();
+			}
+			
+			$source = $_GET["source"];
+			$language = $_GET["language"];
+			
+			if(!isset($settings->parser_ext_renderers->$language)) {
+				$message = "Error: Unknown language {$_GET["language"]}.\nSupported languages:\n";
+				foreach($settings->parser_ext_renderers as $language => $spec)
+					$message .= "$spec->name ($language)\n";
+					
+				http_response_code(400);
+				header("content-type: image/png");
+				imagepng(errorimage(trim($message)));
+				exit();
+			}
+			
+			header("content-type: image/png");
+			imagepng(errorimage("Not implemented yet.\nComing soon :-)"));
 		});
 		
 		/*