diff --git a/site/config/config.php b/site/config/config.php
index bb3eee5..4dcf0cf 100644
--- a/site/config/config.php
+++ b/site/config/config.php
@@ -21,10 +21,6 @@ return [
 					'file_type' => $file->type()
 				]);
 			}
-		},
-		'kirbytext:after' => function (string $text) {
-			// Replace any HTML <h1> or <h2> tag by <h3> tag after Markdown parsing
-			return preg_replace(['/<h1>|<h2>/', '/<\/h1>|<\/h2>/'], ['<h3>', '</h3>'], $text);
 		}
 	],
 	// Thumbnails and srcsets presets
@@ -33,7 +29,8 @@ return [
 			'default' => [
 				'640w' => ['width' => 640, 'quality' => 80],
 				'1280w' => ['width' => 1280, 'quality' => 80],
-				'1920w' => ['width' => 1920, 'quality' => 80]
+				'1920w' => ['width' => 1920, 'quality' => 80],
+				'2560w' => ['width' => 2560, 'quality' => 80]
 			]
 		]
 	]