Minify HTTP server's response HTML

app.js

@@ -169,6 +169,19 @@ global.syzoj = {
     }
     app.use(Session(sessionConfig));
 
+    app.use(require('express-minify-html')({
+      override: true,
+      htmlMinifier: {
+        removeComments: true,
+        collapseWhitespace: true,
+        collapseBooleanAttributes: true,
+        removeAttributeQuotes: true,
+        removeEmptyAttributes: true,
+        minifyJS: true,
+        minifyCSS: true
+      }
+    }));
+
     app.use((req, res, next) => {
       res.locals.useLocalLibs = !!parseInt(req.headers['syzoj-no-cdn']);
 

package.json

@@ -34,6 +34,7 @@
     "download": "^7.1.0",
     "ejs": "^2.5.2",
     "express": "^4.14.0",
+    "express-minify-html": "^0.12.0",
     "express-session": "^1.14.1",
     "file-size": "^1.0.0",
     "fs-extra": "^7.0.1",