fixed #2448

src/meta/css.js

@@ -126,7 +126,8 @@ module.exports = function(Meta) {
 
 	function minify(source, paths, destination, callback) {	
 		less.render(source, {
-			paths: paths
+			paths: paths,
+			compress: true
 		}, function(err, lessOutput) {
 			if (err) {
 				winston.error('[meta/css] Could not minify LESS/CSS: ' + err.message);

src/middleware/middleware.js

@@ -315,7 +315,9 @@ middleware.renderHeader = function(req, res, callback) {
 
 				var less = require('less');
 
-				less.render(meta.config.customCSS, function(err, lessObject) {
+				less.render(meta.config.customCSS, {
+					compress: true
+				}, function(err, lessObject) {
 					if (err) {
 						winston.error('[less] Could not convert custom LESS to CSS! Please check your syntax.');
 						return next(null, '');