diff --git a/404.html b/404.html
new file mode 100644
index 0000000000..8379d7d218
--- /dev/null
+++ b/404.html
@@ -0,0 +1,79 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests">
+    <link rel="shortcut icon" href="https://mongocxx.org/img/favicon.png">
+
+    <title>Page Not Found</title>
+
+    <link rel="stylesheet" href="https://mongocxx.org/lib/bootstrap.css" type="text/css" />
+    <link rel="stylesheet" href="https://mongocxx.org/lib/font-awesome/css/font-awesome.min.css" type="text/css" />
+    <link rel="stylesheet" href="https://mongocxx.org/css/mongodb-docs.css" type="text/css" />
+    <link rel="stylesheet" href="https://mongocxx.org/css/overrides.css" type="text/css" />
+    <link rel="stylesheet" href="https://mongocxx.org/lib/highlight/styles/idea.css" />
+
+    <link rel="canonical" href="https://mongocxx.org/404.html" />
+    <script type="text/javascript">
+        var milliseconds = 5000;
+
+        function redirect() {
+            if (window.location.pathname.startsWith("/api/")) {
+                // Redirect to current API homepage.
+                window.location.assign(window.location.href.split('/api/')[0] + '/api/current')
+            } else {
+                // Redirect to website homepage.
+                window.location.assign(window.location.origin)
+            }
+        }
+
+        setTimeout(redirect, milliseconds);
+    </script>
+</head>
+
+<body>
+    <p>This page could not be found. Automatically redirecting in a few seconds...</p>
+
+    <p><a href="https://mongocxx.org/">Click here</a> if automatic redirection fails.</p>
+
+    <script type="text/javascript" src="https://mongocxx.org/js/jquery.js"></script>
+    <script type="text/javascript" src="https://mongocxx.org/lib/bootstrap.js"></script>
+    <script type="text/javascript" src="https://mongocxx.org/js/navbar.js"></script>
+    <script type="text/javascript" src="https://mongocxx.org/lib/highlight/highlight.pack.js"></script>
+    <script type="text/javascript" src="https://mongocxx.org/js/scripts.js"></script>
+
+    <noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-JQHP" height="0" width="0"
+            style="display:none;visibility:hidden"></iframe></noscript>
+    <script>(function (w, d, s, l, i) {
+            w[l] = w[l] || []; w[l].push(
+                { 'gtm.start': new Date().getTime(), event: 'gtm.js' }
+            ); var f = d.getElementsByTagName(s)[0],
+                j = d.createElement(s), dl = l != 'dataLayer' ? '&l=' + l : ''; j.async = true; j.src =
+                    '//www.googletagmanager.com/gtm.js?id=' + i + dl; f.parentNode.insertBefore(j, f);
+        })(window, document, 'script', 'dataLayer', 'GTM-JQHP');</script>
+    <script type="text/javascript">
+        var _elqQ = _elqQ || [];
+        _elqQ.push(['elqSetSiteId', '413370795']);
+        _elqQ.push(['elqTrackPageView']);
+        (function () {
+            function async_load() { var s = document.createElement('script'); s.type = 'text/javascript'; s.async = true; s.src = '//img03.en25.com/i/elqCfg.min.js'; var x = document.getElementsByTagName('script')[0]; x.parentNode.insertBefore(s, x); }
+            if (window.addEventListener) window.addEventListener('DOMContentLoaded', async_load, false);
+            else if (window.attachEvent) window.attachEvent('onload', async_load);
+        })();
+    </script>
+    <script async src="https://www.googletagmanager.com/gtag/js?id=G-56KD6L3MDX"></script>
+    <script>
+        window.dataLayer = window.dataLayer || [];
+        function gtag() { dataLayer.push(arguments); }
+        gtag('js', new Date());
+        gtag('config', 'G-56KD6L3MDX');
+    </script>
+    <script type="text/javascript">
+        !function (e, t, r, n, a) { if (!e[a]) { for (var i = e[a] = [], s = 0; s < r.length; s++) { var c = r[s]; i[c] = i[c] || function (e) { return function () { var t = Array.prototype.slice.call(arguments); i.push([e, t]) } }(c) } i.SNIPPET_VERSION = "1.0.1"; var o = t.createElement("script"); o.type = "text/javascript", o.async = !0, o.src = "https://d2yyd1h5u9mauk.cloudfront.net/integrations/web/v1/library/" + n + "/" + a + ".js"; var l = t.getElementsByTagName("script")[0]; l.parentNode.insertBefore(o, l) } }(window, document, ["survey", "reset", "config", "init", "set", "get", "event", "identify", "track", "page", "screen", "group", "alias"], "Dk30CC86ba0nATlK", "delighted");
+        delighted.survey();
+    </script>
+</body>
+
+</html>
