diff --git a/config-example.json b/config-example.json
index 6bc6935..6447968 100644
--- a/config-example.json
+++ b/config-example.json
@@ -117,11 +117,11 @@
   "email_jwt_secret": "@EMAIL_JWT_SECRET@",
   "google_analytics": "UA-XXXXXXXX-X",
   "gravatar_url": "https://cdn.v2ex.com/gravatar",
-  "cdnjs_url": "https://cdnjs.loli.net/ajax/libs",
-  "self_cdn_url": "",
+  "cdnjs_url": "built-in",
+  "self_cdn_url": "built-in",
   "google_fonts": {
-    "type": "like-google-fonts",
-    "url": "https://fonts.loli.net"
+    "type": "built-in",
+    "url": ""
   },
   "no_cdn": false,
   "submissions_page_fast_pagination": false,
diff --git a/views/header.ejs b/views/header.ejs
index a8e8179..aee00e3 100644
--- a/views/header.ejs
+++ b/views/header.ejs
@@ -11,7 +11,7 @@
     <link href="<%- selfLib('math.css') %>" rel="stylesheet">
     <link href="<%- selfLib('style.css') %>?20181212" rel="stylesheet">
     <link href="<%- lib('morris.js/0.5.1/morris.css') %>" rel="stylesheet">
-    <% if (useLocalLibs || !syzoj.config.google_fonts || !syzoj.config.google_fonts.url || !['like-google-fonts', 'like-local'].includes(syzoj.config.google_fonts.type)) { %>
+    <% if (useLocalLibs || !syzoj.config.google_fonts || !['like-google-fonts', 'like-local', 'built-in'].includes(syzoj.config.google_fonts.type)) { %>
       <link href="<%- syzoj.utils.makeUrl(['google-fonts', 'fira-mono.css']) %>" rel="stylesheet">
       <link href="<%- syzoj.utils.makeUrl(['google-fonts', 'lato.css']) %>" rel="stylesheet">
       <link href="<%- syzoj.utils.makeUrl(['google-fonts', 'open-sans.css']) %>" rel="stylesheet">
@@ -21,11 +21,16 @@
       <link href="<%- syzoj.config.google_fonts.url %>/google-fonts/lato.css" rel="stylesheet">
       <link href="<%- syzoj.config.google_fonts.url %>/google-fonts/open-sans.css" rel="stylesheet">
       <link href="<%- syzoj.config.google_fonts.url %>/google-fonts/exo-2.css" rel="stylesheet">
-    <% } else { %>
+    <% } else if (syzoj.config.google_fonts.type === 'like-google-fonts') { %>
       <link href="<%- syzoj.config.google_fonts.url %>/css?family=Fira+Mono" rel="stylesheet">
       <link href="<%- syzoj.config.google_fonts.url %>/css?family=Lato:400,700,400italic,700italic&subset=latin" rel="stylesheet">
       <link href="<%- syzoj.config.google_fonts.url %>/css?family=Open+Sans:300,300i,400,400i,600,600i,700,700i,800,800i&amp;subset=latin-ext" rel="stylesheet">
       <link href="<%- syzoj.config.google_fonts.url %>/css?family=Exo+2:600" rel="stylesheet">
+    <% } else if (syzoj.config.google_fonts.type === 'built-in') { %>
+      <link href="<%- this.builtInCdnUrl %>/google-fonts/fira-mono.css" rel="stylesheet">
+      <link href="<%- this.builtInCdnUrl %>/google-fonts/lato.css" rel="stylesheet">
+      <link href="<%- this.builtInCdnUrl %>/google-fonts/open-sans.css" rel="stylesheet">
+      <link href="<%- this.builtInCdnUrl %>/google-fonts/exo-2.css" rel="stylesheet">
     <% } %>
     <script src="<%- lib('jquery/3.3.1/jquery.min.js') %>"></script>
     <% if (syzoj.config.google_analytics && syzoj.config.google_analytics !== 'UA-XXXXXXXX-X') { %>
diff --git a/views/util.ejs b/views/util.ejs
index ba26610..9ac14e2 100644
--- a/views/util.ejs
+++ b/views/util.ejs
@@ -66,9 +66,13 @@ this.iconHidden = [
   'Skipped'
 ];
 
+this.builtInCdnUrl = 'https://cdn.jsdelivr.net/npm/syzoj-public-cdn@1.0.5';
+
 this.lib = uri => {
   if (useLocalLibs || !syzoj.config.cdnjs_url) {
     return syzoj.utils.makeUrl(['cdnjs', uri]);
+  } else if (syzoj.config.cdnjs_url === 'built-in') {
+    return builtInCdnUrl + '/cdnjs/' + uri;
   } else {
     return syzoj.config.cdnjs_url + '/' + uri;
   }
@@ -77,6 +81,8 @@ this.lib = uri => {
 this.selfLib = uri => {
   if (useLocalLibs || !syzoj.config.self_cdn_url) {
     return syzoj.utils.makeUrl(['self', uri]);
+  } else if (syzoj.config.self_cdn_url === 'built-in') {
+    return builtInCdnUrl + '/self/' + uri;
   } else {
     return syzoj.config.self_cdn_url + '/' + uri;
   }