diff --git a/package-lock.json b/package-lock.json
index 036a5717..e3e5a9e5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1534,6 +1534,7 @@
       "version": "1.3.7",
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
       "integrity": "sha512-Il80Qs2WjYlJIBNzNkK6KYqlVMTbZLXgHx2oT0pU/fjRHyEp+PEfEPY0R3WCwAGVOtauxh1hOxNgIf5bv7dQpA==",
+      "dev": true,
       "requires": {
         "mime-types": "~2.1.24",
         "negotiator": "0.6.2"
@@ -1850,7 +1851,8 @@
     "array-flatten": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
-      "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
+      "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI=",
+      "dev": true
     },
     "array-includes": {
       "version": "3.1.1",
@@ -2245,6 +2247,7 @@
       "version": "1.19.0",
       "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.19.0.tgz",
       "integrity": "sha512-dhEPs72UPbDnAQJ9ZKMNTP6ptJaionhP5cBb541nXPlW60Jepo9RV/a4fX4XWW9CuFNK22krhrj1+rgzifNCsw==",
+      "dev": true,
       "requires": {
         "bytes": "3.1.0",
         "content-type": "~1.0.4",
@@ -2349,7 +2352,8 @@
     "bytes": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
-      "integrity": "sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg=="
+      "integrity": "sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg==",
+      "dev": true
     },
     "cache-base": {
       "version": "1.0.1",
@@ -2994,6 +2998,7 @@
       "version": "0.5.3",
       "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.3.tgz",
       "integrity": "sha512-ExO0774ikEObIAEV9kDo50o+79VCUdEB6n6lzKgGwupcVeRlhrj3qGAfwq8G6uBJjkqLrhT0qEYFcWng8z1z0g==",
+      "dev": true,
       "requires": {
         "safe-buffer": "5.1.2"
       }
@@ -3001,7 +3006,8 @@
     "content-type": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.4.tgz",
-      "integrity": "sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA=="
+      "integrity": "sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA==",
+      "dev": true
     },
     "convert-source-map": {
       "version": "1.7.0",
@@ -3015,12 +3021,14 @@
     "cookie": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.0.tgz",
-      "integrity": "sha512-+Hp8fLp57wnUSt0tY0tHEXh4voZRDnoIrZPqlo3DPiI4y9lwg/jqx+1Om94/W6ZaPDOUbnjOt/99w66zk+l1Xg=="
+      "integrity": "sha512-+Hp8fLp57wnUSt0tY0tHEXh4voZRDnoIrZPqlo3DPiI4y9lwg/jqx+1Om94/W6ZaPDOUbnjOt/99w66zk+l1Xg==",
+      "dev": true
     },
     "cookie-signature": {
       "version": "1.0.6",
       "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
-      "integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw="
+      "integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw=",
+      "dev": true
     },
     "copy-descriptor": {
       "version": "0.1.1",
@@ -4658,6 +4666,7 @@
       "version": "4.17.1",
       "resolved": "https://registry.npmjs.org/express/-/express-4.17.1.tgz",
       "integrity": "sha512-mHJ9O79RqluphRrcw2X/GTh3k9tVv8YcoyY4Kkh4WDMUYKRZUq0h1o0w2rrrxBqM7VoeUVqgb27xlEMXTnYt4g==",
+      "dev": true,
       "requires": {
         "accepts": "~1.3.7",
         "array-flatten": "1.1.1",
@@ -4962,6 +4971,7 @@
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.1.2.tgz",
       "integrity": "sha512-aAWcW57uxVNrQZqFXjITpW3sIUQmHGG3qSb9mUah9MgMC4NeWhNOlNjXEYq3HjRAvL6arUviZGGJsBg6z0zsWA==",
+      "dev": true,
       "requires": {
         "debug": "2.6.9",
         "encodeurl": "~1.0.2",
@@ -5219,7 +5229,8 @@
     "forwarded": {
       "version": "0.1.2",
       "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.1.2.tgz",
-      "integrity": "sha1-mMI9qxF1ZXuMBXPozszZGw/xjIQ="
+      "integrity": "sha1-mMI9qxF1ZXuMBXPozszZGw/xjIQ=",
+      "dev": true
     },
     "fragment-cache": {
       "version": "0.2.1",
@@ -5936,6 +5947,7 @@
       "version": "0.4.24",
       "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
       "integrity": "sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==",
+      "dev": true,
       "requires": {
         "safer-buffer": ">= 2.1.2 < 3"
       }
@@ -6147,7 +6159,8 @@
     "ipaddr.js": {
       "version": "1.9.1",
       "resolved": "https://registry.npmjs.org/ipaddr.js/-/ipaddr.js-1.9.1.tgz",
-      "integrity": "sha512-0KI/607xoxSToH7GjN1FfSbLoU0+btTicjsQSWQlh/hZykN8KpmMf7uYwPW3R+akZ6R/w18ZlXSHBYXiYUPO3g=="
+      "integrity": "sha512-0KI/607xoxSToH7GjN1FfSbLoU0+btTicjsQSWQlh/hZykN8KpmMf7uYwPW3R+akZ6R/w18ZlXSHBYXiYUPO3g==",
+      "dev": true
     },
     "is-absolute": {
       "version": "1.0.0",
@@ -7132,7 +7145,8 @@
     "media-typer": {
       "version": "0.3.0",
       "resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
-      "integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g="
+      "integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g=",
+      "dev": true
     },
     "memory-fs": {
       "version": "0.5.0",
@@ -7165,7 +7179,8 @@
     "merge-descriptors": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/merge-descriptors/-/merge-descriptors-1.0.1.tgz",
-      "integrity": "sha1-sAqqVW3YtEVoFQ7J0blT8/kMu2E="
+      "integrity": "sha1-sAqqVW3YtEVoFQ7J0blT8/kMu2E=",
+      "dev": true
     },
     "merge-stream": {
       "version": "2.0.0",
@@ -7182,7 +7197,8 @@
     "methods": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/methods/-/methods-1.1.2.tgz",
-      "integrity": "sha1-VSmk1nZUE07cxSZmVoNbD4Ua/O4="
+      "integrity": "sha1-VSmk1nZUE07cxSZmVoNbD4Ua/O4=",
+      "dev": true
     },
     "micromatch": {
       "version": "4.0.2",
@@ -7202,12 +7218,14 @@
     "mime-db": {
       "version": "1.44.0",
       "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.44.0.tgz",
-      "integrity": "sha512-/NOTfLrsPBVeH7YtFPgsVWveuL+4SjjYxaQ1xtM1KMFj7HdxlBlxeyNLzhyJVx7r4rZGJAZ/6lkKCitSc/Nmpg=="
+      "integrity": "sha512-/NOTfLrsPBVeH7YtFPgsVWveuL+4SjjYxaQ1xtM1KMFj7HdxlBlxeyNLzhyJVx7r4rZGJAZ/6lkKCitSc/Nmpg==",
+      "dev": true
     },
     "mime-types": {
       "version": "2.1.27",
       "resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.27.tgz",
       "integrity": "sha512-JIhqnCasI9yD+SsmkquHBxTSEuZdQX5BuQnS2Vc7puQQQ+8yiP5AY5uWhpdv4YL4VM5c6iliiYWPgJ/nJQLp7w==",
+      "dev": true,
       "requires": {
         "mime-db": "1.44.0"
       }
@@ -7741,7 +7759,8 @@
     "negotiator": {
       "version": "0.6.2",
       "resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.2.tgz",
-      "integrity": "sha512-hZXc7K2e+PgeI1eDBe/10Ard4ekbfrrqG8Ep+8Jmf4JID2bNg7NvCPOZN+kfF574pFQI7mum2AUqDidoKqcTOw=="
+      "integrity": "sha512-hZXc7K2e+PgeI1eDBe/10Ard4ekbfrrqG8Ep+8Jmf4JID2bNg7NvCPOZN+kfF574pFQI7mum2AUqDidoKqcTOw==",
+      "dev": true
     },
     "neo-async": {
       "version": "2.6.2",
@@ -8391,7 +8410,8 @@
     "path-to-regexp": {
       "version": "0.1.7",
       "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-0.1.7.tgz",
-      "integrity": "sha1-32BBeABfUi8V60SQ5yR6G/qmf4w="
+      "integrity": "sha1-32BBeABfUi8V60SQ5yR6G/qmf4w=",
+      "dev": true
     },
     "path-type": {
       "version": "4.0.0",
@@ -11480,6 +11500,7 @@
       "version": "2.0.6",
       "resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.6.tgz",
       "integrity": "sha512-dh/frvCBVmSsDYzw6n926jv974gddhkFPfiN8hPOi30Wax25QZyZEGveluCgliBnqmuM+UJmBErbAUFIoDbjOw==",
+      "dev": true,
       "requires": {
         "forwarded": "~0.1.2",
         "ipaddr.js": "1.9.1"
@@ -11533,7 +11554,8 @@
     "qs": {
       "version": "6.7.0",
       "resolved": "https://registry.npmjs.org/qs/-/qs-6.7.0.tgz",
-      "integrity": "sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ=="
+      "integrity": "sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ==",
+      "dev": true
     },
     "querystring": {
       "version": "0.2.0",
@@ -11565,6 +11587,7 @@
       "version": "2.4.0",
       "resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.4.0.tgz",
       "integrity": "sha512-4Oz8DUIwdvoa5qMJelxipzi/iJIi40O5cGV1wNYp5hvZP8ZN0T+jiNkL0QepXs+EsQ9XJ8ipEDoiH70ySUJP3Q==",
+      "dev": true,
       "requires": {
         "bytes": "3.1.0",
         "http-errors": "1.7.2",
@@ -12159,7 +12182,8 @@
     "safe-buffer": {
       "version": "5.1.2",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
-      "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
+      "integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==",
+      "dev": true
     },
     "safe-regex": {
       "version": "1.1.0",
@@ -12173,7 +12197,8 @@
     "safer-buffer": {
       "version": "2.1.2",
       "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
-      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
+      "dev": true
     },
     "sax": {
       "version": "1.2.4",
@@ -13626,6 +13651,7 @@
       "version": "1.6.18",
       "resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz",
       "integrity": "sha512-TkRKr9sUTxEH8MdfuCSP7VizJyzRNMjj2J2do2Jr3Kym598JVdEksuzPQCnlFPW4ky9Q+iA+ma9BGm06XQBy8g==",
+      "dev": true,
       "requires": {
         "media-typer": "0.3.0",
         "mime-types": "~2.1.24"
@@ -13740,7 +13766,8 @@
     "unpipe": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
-      "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw="
+      "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw=",
+      "dev": true
     },
     "unquote": {
       "version": "1.1.1",
@@ -13905,7 +13932,8 @@
     "utils-merge": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
-      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
+      "integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM=",
+      "dev": true
     },
     "uuid": {
       "version": "3.4.0",
@@ -13947,7 +13975,8 @@
     "vary": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
-      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
+      "integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw=",
+      "dev": true
     },
     "vendors": {
       "version": "1.0.4",
diff --git a/package.json b/package.json
index 8d53f010..62760fe7 100644
--- a/package.json
+++ b/package.json
@@ -39,11 +39,11 @@
     "chalk": "^4.1.0",
     "commander": "^6.2.0",
     "ejs": "^3.1.5",
-    "express": "^4.17.1",
     "filesize": "^6.1.0",
     "gzip-size": "^6.0.0",
     "lodash": "^4.17.20",
     "opener": "^1.5.2",
+    "serve-static": "^1.14.1",
     "ws": "^7.3.1"
   },
   "devDependencies": {
diff --git a/src/viewer.js b/src/viewer.js
index c259eede..8d6bd056 100644
--- a/src/viewer.js
+++ b/src/viewer.js
@@ -4,7 +4,7 @@ const http = require('http');
 
 const WebSocket = require('ws');
 const _ = require('lodash');
-const express = require('express');
+const serveStatic = require('serve-static');
 const ejs = require('ejs');
 const {bold} = require('chalk');
 
@@ -14,6 +14,7 @@ const {open} = require('./utils');
 
 const projectRoot = path.resolve(__dirname, '..');
 const assetsRoot = path.join(projectRoot, 'public');
+const viewsRoot = path.join(projectRoot, 'views');
 
 function resolveTitle(reportTitle) {
   if (typeof reportTitle === 'function') {
@@ -49,28 +50,44 @@ async function startServer(bundleStats, opts) {
 
   if (!chartData) return;
 
-  const app = express();
-
-  // Explicitly using our `ejs` dependency to render templates
-  // Fixes #17
-  app.engine('ejs', require('ejs').renderFile);
-  app.set('view engine', 'ejs');
-  app.set('views', `${projectRoot}/views`);
-  app.use(express.static(`${projectRoot}/public`));
-
-  app.use('/', (req, res) => {
-    res.render('viewer', {
-      mode: 'server',
-      title: resolveTitle(reportTitle),
-      get chartData() { return chartData },
-      defaultSizes,
-      enableWebSocket: true,
-      // Helpers
-      escapeJson
-    });
-  });
+  const serveStaticMiddleware = serveStatic(`${projectRoot}/public`);
+
+  const handleError = (res, err) => {
+    console.error(err.stack || err.toString());
+    res.writeHead(500);
+    res.end();
+  };
 
-  const server = http.createServer(app);
+  const server = http.createServer((req, res) => {
+    if (req.method === 'GET' && req.url === '/') {
+      const data = {
+        mode: 'server',
+        title: resolveTitle(reportTitle),
+        get chartData() { return chartData },
+        defaultSizes,
+        enableWebSocket: true,
+        // Helpers
+        escapeJson
+      };
+      ejs.renderFile(`${viewsRoot}/viewer.ejs`, data, {cache: true}, (err, html) => {
+        if (err) {
+          handleError(res, err);
+        } else {
+          res.writeHead(200, {'Content-Type': 'text/html'});
+          return res.end(html);
+        }
+      });
+    } else {
+      serveStaticMiddleware(req, res, err => {
+        if (err) {
+          handleError(res, err);
+        } else {
+          res.writeHead(404);
+          res.end();
+        }
+      });
+    }
+  });
 
   await new Promise(resolve => {
     server.listen(port, host, () => {