diff --git a/README.md b/README.md
index 1f166ce2c..c7b6364fc 100644
--- a/README.md
+++ b/README.md
@@ -41,6 +41,12 @@ We use [cypress](https://cypress.io) for e2e tests.
 3. Choose your browser and test
 4. Let the tests run
 
+### Bundle analysis
+You can inspect the generated production-bundle files to look for optimization issues.
+
+1. Run `yarn analyze`
+2. Open the generated `build/report.html` in your favourite browser
+
 ## Production mode
 
 1. Clone this repo (e.g. `git clone https://github.com/codimd/react-client.git hedgedoc-react-client`)
diff --git a/craco.config.js b/craco.config.js
index ba5e29101..2bd456967 100644
--- a/craco.config.js
+++ b/craco.config.js
@@ -1,4 +1,6 @@
 const CopyPlugin = require('copy-webpack-plugin');
+const { when } = require('@craco/craco');
+const { BundleAnalyzerPlugin } = require('webpack-bundle-analyzer');
 
 module.exports = {
   webpack: {
@@ -9,6 +11,12 @@ module.exports = {
           { from: 'node_modules/@hpcc-js/wasm/dist/expatlib.wasm', to: 'static/js' }
         ],
       }),
+      ...when(Boolean(process.env.ANALYZE), () => [
+        new BundleAnalyzerPlugin({
+          analyzerMode: "static",
+          generateStatsFile: true
+        })
+      ], [])
     ],
   },
 }
diff --git a/package.json b/package.json
index 066bc76b6..29a2742df 100644
--- a/package.json
+++ b/package.json
@@ -109,6 +109,7 @@
         "start:dev": "REACT_APP_BACKEND=http://localhost:3000 yarn start",
         "build:serve": "http-server build/ -s -p 3001 -P \"http://127.0.0.1:3001?\"",
         "build": "craco build",
+        "analyze": "cross-env ANALYZE=true craco build",
         "test": "craco test",
         "lint": "eslint --ext .ts,.tsx src",
         "eject": "react-scripts eject",
@@ -154,6 +155,7 @@
         "@testing-library/cypress": "7.0.0",
         "@types/redux-devtools": "3.0.47",
         "@types/redux-devtools-extension": "2.13.2",
+        "cross-env": "7.0.2",
         "cypress": "5.2.0",
         "cypress-commands": "1.1.0",
         "eslint-plugin-chai-friendly": "0.6.0",
@@ -161,7 +163,8 @@
         "http-server": "0.12.3",
         "redux-devtools": "3.7.0",
         "redux-devtools-extension": "2.13.8",
-        "ts-loader": "8.0.4"
+        "ts-loader": "8.0.4",
+        "webpack-bundle-analyzer": "^3.9.0"
     },
     "resolutions": {
         "cypress": "5.2.0"
diff --git a/yarn.lock b/yarn.lock
index 4468806d4..78c04bdef 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2706,6 +2706,11 @@ acorn-walk@^6.0.1:
   resolved "https://registry.yarnpkg.com/acorn-walk/-/acorn-walk-6.2.0.tgz#123cb8f3b84c2171f1f7fb252615b1c78a6b1a8c"
   integrity sha512-7evsyfH1cLOCdAzZAd43Cic04yKydNx0cF+7tiA19p1XnLLPU4dpCQOqpjqwokFe//vS0QqfqqjCS2JkiIs0cA==
 
+acorn-walk@^7.1.1:
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/acorn-walk/-/acorn-walk-7.2.0.tgz#0de889a601203909b0fbe07b8938dc21d2e967bc"
+  integrity sha512-OPdCF6GsMIP+Az+aWfAAOEt2/+iVDKE7oy6lJ098aoe59oAmK76qV6Gw60SbZ8jHuG2wH058GF4pLFbYamYrVA==
+
 acorn@^5.5.3:
   version "5.7.4"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-5.7.4.tgz#3e8d8a9947d0599a1796d10225d7432f4a4acf5e"
@@ -3343,6 +3348,16 @@ bcrypt-pbkdf@^1.0.0:
   dependencies:
     tweetnacl "^0.14.3"
 
+bfj@^6.1.1:
+  version "6.1.2"
+  resolved "https://registry.yarnpkg.com/bfj/-/bfj-6.1.2.tgz#325c861a822bcb358a41c78a33b8e6e2086dde7f"
+  integrity sha512-BmBJa4Lip6BPRINSZ0BPEIfB1wUY/9rwbwvIHQA1KjX9om29B6id0wnWXq7m3bn5JrUVjeOTnVuhPT1FiHwPGw==
+  dependencies:
+    bluebird "^3.5.5"
+    check-types "^8.0.3"
+    hoopy "^0.1.4"
+    tryer "^1.0.1"
+
 big.js@^5.2.2:
   version "5.2.2"
   resolved "https://registry.yarnpkg.com/big.js/-/big.js-5.2.2.tgz#65f0af382f578bcdc742bd9c281e9cb2d7768328"
@@ -3857,6 +3872,11 @@ check-more-types@^2.24.0:
   resolved "https://registry.yarnpkg.com/check-more-types/-/check-more-types-2.24.0.tgz#1420ffb10fd444dcfc79b43891bbfffd32a84600"
   integrity sha1-FCD/sQ/URNz8ebQ4kbv//TKoRgA=
 
+check-types@^8.0.3:
+  version "8.0.3"
+  resolved "https://registry.yarnpkg.com/check-types/-/check-types-8.0.3.tgz#3356cca19c889544f2d7a95ed49ce508a0ecf552"
+  integrity sha512-YpeKZngUmG65rLudJ4taU7VLkOCTMhNl/u4ctNC56LQS/zJTyNH0Lrtwm1tfTsbLlwvlfsA2d1c8vCf/Kh2KwQ==
+
 chokidar@^2.1.8:
   version "2.1.8"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-2.1.8.tgz#804b3a7b6a99358c3c5c61e71d8728f041cff917"
@@ -4129,7 +4149,7 @@ combined-stream@^1.0.6, combined-stream@~1.0.6:
   dependencies:
     delayed-stream "~1.0.0"
 
-commander@2, commander@^2.11.0, commander@^2.19.0, commander@^2.20.0:
+commander@2, commander@^2.11.0, commander@^2.18.0, commander@^2.19.0, commander@^2.20.0:
   version "2.20.3"
   resolved "https://registry.yarnpkg.com/commander/-/commander-2.20.3.tgz#fd485e84c03eb4881c20722ba48035e8531aeb33"
   integrity sha512-GpVkmM8vF2vQUkj2LvZmD35JxeJOLCwJ9cUkugyk2nuhbv3+mJvpLYYt+0+USMxE+oj+ey/lJEnhZw75x/OMcQ==
@@ -4422,6 +4442,13 @@ create-react-context@^0.3.0:
     gud "^1.0.0"
     warning "^4.0.3"
 
+cross-env@7.0.2:
+  version "7.0.2"
+  resolved "https://registry.yarnpkg.com/cross-env/-/cross-env-7.0.2.tgz#bd5ed31339a93a3418ac4f3ca9ca3403082ae5f9"
+  integrity sha512-KZP/bMEOJEDCkDQAyRhu3RL2ZO/SUVrxQVI0G3YEQ+OLbRA3c6zgixe8Mq8a/z7+HKlNEjo8oiLUs8iRijY2Rw==
+  dependencies:
+    cross-spawn "^7.0.1"
+
 cross-spawn@7.0.1:
   version "7.0.1"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-7.0.1.tgz#0ab56286e0f7c24e153d04cc2aa027e43a9a5d14"
@@ -4450,7 +4477,7 @@ cross-spawn@^6.0.0, cross-spawn@^6.0.5:
     shebang-command "^1.2.0"
     which "^1.2.9"
 
-cross-spawn@^7.0.0:
+cross-spawn@^7.0.0, cross-spawn@^7.0.1:
   version "7.0.3"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-7.0.3.tgz#f73a85b9d5d41d045551c177e2882d4ac85728a6"
   integrity sha512-iRDPJKUPVEND7dHPO8rkbOnPpyDygcDFtWjpeWNCgy8WP2rXcxXL8TskReQl6OrB2G7+UJrags1q15Fudc7G6w==
@@ -5625,6 +5652,11 @@ ee-first@1.1.1:
   resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
   integrity sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0=
 
+ejs@^2.6.1:
+  version "2.7.4"
+  resolved "https://registry.yarnpkg.com/ejs/-/ejs-2.7.4.tgz#48661287573dcc53e366c7a1ae52c3a120eec9ba"
+  integrity sha512-7vmuyh5+kuUyJKePhQfRQBhXV5Ce+RnaeeQArKu1EAMpL3WbgMt5WG6uQZpEVvYSSsxMXRKOewtDk9RaTKXRlA==
+
 electron-to-chromium@^1.3.378, electron-to-chromium@^1.3.564:
   version "1.3.567"
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.567.tgz#7a404288952ac990e447a7a86470d460ea953b8f"
@@ -6274,7 +6306,7 @@ expect@^24.9.0:
     jest-message-util "^24.9.0"
     jest-regex-util "^24.9.0"
 
-express@^4.17.1:
+express@^4.16.3, express@^4.17.1:
   version "4.17.1"
   resolved "https://registry.yarnpkg.com/express/-/express-4.17.1.tgz#4491fc38605cf51f8629d39c2b5d026f98a4c134"
   integrity sha512-mHJ9O79RqluphRrcw2X/GTh3k9tVv8YcoyY4Kkh4WDMUYKRZUq0h1o0w2rrrxBqM7VoeUVqgb27xlEMXTnYt4g==
@@ -6521,6 +6553,11 @@ filesize@6.0.1:
   resolved "https://registry.yarnpkg.com/filesize/-/filesize-6.0.1.tgz#f850b509909c7c86f7e450ea19006c31c2ed3d2f"
   integrity sha512-u4AYWPgbI5GBhs6id1KdImZWn5yfyFrrQ8OWZdN7ZMfA8Bf4HcO0BGo9bmUIEV8yrp8I1xVfJ/dn90GtFNNJcg==
 
+filesize@^3.6.1:
+  version "3.6.1"
+  resolved "https://registry.yarnpkg.com/filesize/-/filesize-3.6.1.tgz#090bb3ee01b6f801a8a8be99d31710b3422bb317"
+  integrity sha512-7KjR1vv6qnicaPMi1iiTcI85CyYwRO/PSFCu6SvqL8jN2Wjt/NIYQTFtFs7fSDCYOstUkEWIQGFUg5YZQfjlcg==
+
 fill-range@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/fill-range/-/fill-range-4.0.0.tgz#d544811d428f98eb06a63dc402d2403c328c38f7"
@@ -7032,7 +7069,7 @@ gud@^1.0.0:
   resolved "https://registry.yarnpkg.com/gud/-/gud-1.0.0.tgz#a489581b17e6a70beca9abe3ae57de7a499852c0"
   integrity sha512-zGEOVKFM5sVPPrYs7J5/hYEw2Pof8KCyOwyhG8sAF26mCAeUFAcYPu1mwB7hhpIP29zOIBaDqwuHdLp0jvZXjw==
 
-gzip-size@5.1.1:
+gzip-size@5.1.1, gzip-size@^5.0.0:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/gzip-size/-/gzip-size-5.1.1.tgz#cb9bee692f87c0612b232840a873904e4c135274"
   integrity sha512-FNHi6mmoHvs1mxZAds4PpdCS6QG8B4C1krxJsMutgxl5t3+GlRTzzI3NEkifXx2pVsOvJdOGSmIgDhQ55FwdPA==
@@ -7188,6 +7225,11 @@ hoist-non-react-statics@^3.1.0, hoist-non-react-statics@^3.3.0:
   dependencies:
     react-is "^16.7.0"
 
+hoopy@^0.1.4:
+  version "0.1.4"
+  resolved "https://registry.yarnpkg.com/hoopy/-/hoopy-0.1.4.tgz#609207d661100033a9a9402ad3dea677381c1b1d"
+  integrity sha512-HRcs+2mr52W0K+x8RzcLzuPPmVIKMSv97RGHy0Ea9y/mpcaK+xTrjICA04KAHi4GRzxliNqNJEFYWHghy3rSfQ==
+
 hosted-git-info@^2.1.4:
   version "2.8.8"
   resolved "https://registry.yarnpkg.com/hosted-git-info/-/hosted-git-info-2.8.8.tgz#7539bd4bc1e0e0a895815a2e0262420b12858488"
@@ -13650,6 +13692,11 @@ try-to-catch@^1.0.2:
   resolved "https://registry.yarnpkg.com/try-to-catch/-/try-to-catch-1.1.1.tgz#770162dd13b9a0e55da04db5b7f888956072038a"
   integrity sha512-ikUlS+/BcImLhNYyIgZcEmq4byc31QpC+46/6Jm5ECWkVFhf8SM2Fp/0pMVXPX6vk45SMCwrP4Taxucne8I0VA==
 
+tryer@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/tryer/-/tryer-1.0.1.tgz#f2c85406800b9b0f74c9f7465b81eaad241252f8"
+  integrity sha512-c3zayb8/kWWpycWYg87P71E1S1ZL6b6IJxfb5fvsUgsf0S2MVGaDhDXXjDMpdCpfWXqptc+4mXwmiy1ypXqRAA==
+
 ts-easing@^0.2.0:
   version "0.2.0"
   resolved "https://registry.yarnpkg.com/ts-easing/-/ts-easing-0.2.0.tgz#c8a8a35025105566588d87dbda05dd7fbfa5a4ec"
@@ -14476,6 +14523,25 @@ webidl-conversions@^4.0.2:
   resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-4.0.2.tgz#a855980b1f0b6b359ba1d5d9fb39ae941faa63ad"
   integrity sha512-YQ+BmxuTgd6UXZW3+ICGfyqRyHXVlD5GtQr5+qjiNW7bF0cqrzX500HVXPBOvgXb5YnzDd+h0zqyv61KUD7+Sg==
 
+webpack-bundle-analyzer@^3.9.0:
+  version "3.9.0"
+  resolved "https://registry.yarnpkg.com/webpack-bundle-analyzer/-/webpack-bundle-analyzer-3.9.0.tgz#f6f94db108fb574e415ad313de41a2707d33ef3c"
+  integrity sha512-Ob8amZfCm3rMB1ScjQVlbYYUEJyEjdEtQ92jqiFUYt5VkEeO2v5UMbv49P/gnmCZm3A6yaFQzCBvpZqN4MUsdA==
+  dependencies:
+    acorn "^7.1.1"
+    acorn-walk "^7.1.1"
+    bfj "^6.1.1"
+    chalk "^2.4.1"
+    commander "^2.18.0"
+    ejs "^2.6.1"
+    express "^4.16.3"
+    filesize "^3.6.1"
+    gzip-size "^5.0.0"
+    lodash "^4.17.19"
+    mkdirp "^0.5.1"
+    opener "^1.5.1"
+    ws "^6.0.0"
+
 webpack-dev-middleware@^3.7.2:
   version "3.7.2"
   resolved "https://registry.yarnpkg.com/webpack-dev-middleware/-/webpack-dev-middleware-3.7.2.tgz#0019c3db716e3fa5cecbf64f2ab88a74bab331f3"
@@ -14878,7 +14944,7 @@ ws@^5.2.0:
   dependencies:
     async-limiter "~1.0.0"
 
-ws@^6.1.2, ws@^6.2.1:
+ws@^6.0.0, ws@^6.1.2, ws@^6.2.1:
   version "6.2.1"
   resolved "https://registry.yarnpkg.com/ws/-/ws-6.2.1.tgz#442fdf0a47ed64f59b6a5d8ff130f4748ed524fb"
   integrity sha512-GIyAXC2cB7LjvpgMt9EKS2ldqr0MTrORaleiOno6TweZ6r3TKtoFQWay/2PceJ3RuBasOHzXNn5Lrw1X0bEjqA==