diff --git a/bin/bundleAnalyzer b/bin/bundleAnalyzer
new file mode 100755
index 000000000..86a93877b
--- /dev/null
+++ b/bin/bundleAnalyzer
@@ -0,0 +1,21 @@
+#!/usr/bin/env node
+
+/* eslint-env node */
+
+const webpack = require('webpack');
+const { BundleAnalyzerPlugin } = require('webpack-bundle-analyzer');
+const config = require('../config/webpack/production');
+
+config.plugins.push(new BundleAnalyzerPlugin());
+
+process.env.NODE_ENV = 'production';
+
+const compiler = webpack(config);
+
+compiler.run((error, stats) => {
+  if (error) {
+    throw new Error(error);
+  }
+
+  console.log(stats); // eslint-disable-line no-console
+});
diff --git a/docs/frontend/webpacker.md b/docs/frontend/webpacker.md
index 1eb274863..567638362 100644
--- a/docs/frontend/webpacker.md
+++ b/docs/frontend/webpacker.md
@@ -42,3 +42,6 @@ https://github.com/rails/webpacker/blob/master/lib/webpacker/helper.rb
 
 Aside from the Webpacker repository, see also Ross Kaffenberger's
 [visual guide to Webpacker](https://rossta.net/blog/visual-guide-to-webpacker.html).
+
+If you're interested in bundles sizes and what's contained within them for a
+production build, run `bin/bundleAnalyzer` from the command line.
diff --git a/package.json b/package.json
index 21ea0a9db..e6058be1f 100644
--- a/package.json
+++ b/package.json
@@ -141,6 +141,7 @@
     "start-server-and-test": "^1.11.6",
     "style-loader": "^2.0.0",
     "svgo": "1.3.2",
+    "webpack-bundle-analyzer": "^4.3.0",
     "webpack-dev-server": "^3.11.0"
   },
   "dependencies": {
diff --git a/yarn.lock b/yarn.lock
index ceb6daa7d..8ddddd70d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1628,6 +1628,11 @@
   dependencies:
     mkdirp "^1.0.4"
 
+"@polka/url@^1.0.0-next.9":
+  version "1.0.0-next.11"
+  resolved "https://registry.yarnpkg.com/@polka/url/-/url-1.0.0-next.11.tgz#aeb16f50649a91af79dbe36574b66d0f9e4d9f71"
+  integrity sha512-3NsZsJIA/22P3QUyrEDNA2D133H4j224twJrdipXN38dpnIOzAbUDtOwkcJ5pXmn75w7LSQDjA4tO9dm1XlqlA==
+
 "@popperjs/core@^2.4.4", "@popperjs/core@^2.5.4":
   version "2.5.4"
   resolved "https://registry.yarnpkg.com/@popperjs/core/-/core-2.5.4.tgz#de25b5da9f727985a3757fd59b5d028aba75841a"
@@ -3549,6 +3554,11 @@ acorn-walk@^7.0.0, acorn-walk@^7.1.1:
   resolved "https://registry.yarnpkg.com/acorn-walk/-/acorn-walk-7.2.0.tgz#0de889a601203909b0fbe07b8938dc21d2e967bc"
   integrity sha512-OPdCF6GsMIP+Az+aWfAAOEt2/+iVDKE7oy6lJ098aoe59oAmK76qV6Gw60SbZ8jHuG2wH058GF4pLFbYamYrVA==
 
+acorn-walk@^8.0.0:
+  version "8.0.0"
+  resolved "https://registry.yarnpkg.com/acorn-walk/-/acorn-walk-8.0.0.tgz#56ae4c0f434a45fff4a125e7ea95fa9c98f67a16"
+  integrity sha512-oZRad/3SMOI/pxbbmqyurIx7jHw1wZDcR9G44L8pUVFEomX/0dH89SrM1KaDXuv1NpzAXz6Op/Xu/Qd5XXzdEA==
+
 acorn@^6.4.1:
   version "6.4.2"
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-6.4.2.tgz#35866fd710528e92de10cf06016498e47e39e1e6"
@@ -3559,6 +3569,11 @@ acorn@^7.1.0, acorn@^7.1.1, acorn@^7.4.0:
   resolved "https://registry.yarnpkg.com/acorn/-/acorn-7.4.1.tgz#feaed255973d2e77555b83dbc08851a6c63520fa"
   integrity sha512-nQyp0o1/mNdbTO1PO6kHkwSrmgZ0MT/jCCpNiwbUjGoRN4dlBhqJtoQuCnEOKzgTVwg0ZWiCoQy6SxMebQVh8A==
 
+acorn@^8.0.4:
+  version "8.0.4"
+  resolved "https://registry.yarnpkg.com/acorn/-/acorn-8.0.4.tgz#7a3ae4191466a6984eee0fe3407a4f3aa9db8354"
+  integrity sha512-XNP0PqF1XD19ZlLKvB7cMmnZswW4C/03pRHgirB30uSJTaS3A3V1/P4sS3HPvFmjoriPCJQs+JDSbm4bL1TxGQ==
+
 address@1.1.2, address@^1.0.1:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/address/-/address-1.1.2.tgz#bf1116c9c758c51b7a933d296b72c221ed9428b6"
@@ -7585,7 +7600,7 @@ duplexer3@^0.1.4:
   resolved "https://registry.yarnpkg.com/duplexer3/-/duplexer3-0.1.4.tgz#ee01dd1cac0ed3cbc7fdbea37dc0a8f1ce002ce2"
   integrity sha1-7gHdHKwO08vH/b6jfcCo8c4ALOI=
 
-duplexer@^0.1.1, duplexer@~0.1.1:
+duplexer@^0.1.1, duplexer@^0.1.2, duplexer@~0.1.1:
   version "0.1.2"
   resolved "https://registry.yarnpkg.com/duplexer/-/duplexer-0.1.2.tgz#3abe43aef3835f8ae077d136ddce0f276b0400e6"
   integrity sha512-jtD6YG370ZCIi/9GTaJKQxWTZD045+4R4hTk/x1UyoqadyJ9x9CgSi1RlVDQF8U2sxLLSnFkCaMihqljHIWgMg==
@@ -9498,6 +9513,13 @@ gzip-size@5.1.1:
     duplexer "^0.1.1"
     pify "^4.0.1"
 
+gzip-size@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/gzip-size/-/gzip-size-6.0.0.tgz#065367fd50c239c0671cbcbad5be3e2eeb10e462"
+  integrity sha512-ax7ZYomf6jqPTQ4+XCpUGyXKHk5WweS+e05MBO4/y3WJ5RkmPXNKvX+bx1behVILVwr6JSQvZAku021CHPXG3Q==
+  dependencies:
+    duplexer "^0.1.2"
+
 handle-thing@^2.0.0:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/handle-thing/-/handle-thing-2.0.1.tgz#857f79ce359580c340d43081cc648970d0bb234e"
@@ -12540,6 +12562,11 @@ mime@1.6.0:
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
   integrity sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg==
 
+mime@^2.3.1:
+  version "2.4.7"
+  resolved "https://registry.yarnpkg.com/mime/-/mime-2.4.7.tgz#962aed9be0ed19c91fd7dc2ece5d7f4e89a90d74"
+  integrity sha512-dhNd1uA2u397uQk3Nv5LM4lm93WYDUXFn3Fu291FJerns4jyTudqhIWe4W04YLy7Uk1tm1Ore04NpjRvQp/NPA==
+
 mime@^2.4.4:
   version "2.4.6"
   resolved "https://registry.yarnpkg.com/mime/-/mime-2.4.6.tgz#e5b407c90db442f2beb5b162373d07b69affa4d1"
@@ -13386,6 +13413,11 @@ opencollective-postinstall@^2.0.2:
   resolved "https://registry.yarnpkg.com/opencollective-postinstall/-/opencollective-postinstall-2.0.3.tgz#7a0fff978f6dbfa4d006238fbac98ed4198c3259"
   integrity sha512-8AV/sCtuzUeTo8gQK5qDZzARrulB3egtLzFgteqB2tcT4Mw7B8Kt7JcDHmltjz6FOAHsvTevk70gZEbhM4ZS9Q==
 
+opener@^1.5.2:
+  version "1.5.2"
+  resolved "https://registry.yarnpkg.com/opener/-/opener-1.5.2.tgz#5d37e1f35077b9dcac4301372271afdeb2a13598"
+  integrity sha512-ur5UIdyw5Y7yEj9wLzhqXiy6GZ3Mwx0yGI+5sMn2r0N0v3cKJvUmFH5yPP+WXh9e0xfyzyJX95D8l088DNFj7A==
+
 opn@^5.5.0:
   version "5.5.0"
   resolved "https://registry.yarnpkg.com/opn/-/opn-5.5.0.tgz#fc7164fab56d235904c51c3b27da6758ca3b9bfc"
@@ -17179,6 +17211,15 @@ simplebar@^4.2.3:
     lodash.throttle "^4.1.1"
     resize-observer-polyfill "^1.5.1"
 
+sirv@^1.0.7:
+  version "1.0.10"
+  resolved "https://registry.yarnpkg.com/sirv/-/sirv-1.0.10.tgz#3e591f5a9ae2520f50d5830f5fae38d97e7be194"
+  integrity sha512-H5EZCoZaggEUQy8ocKsF7WAToGuZhjJlLvM3XOef46CbdIgbNeQ1p32N1PCuCjkVYwrAVOSMacN6CXXgIzuspg==
+  dependencies:
+    "@polka/url" "^1.0.0-next.9"
+    mime "^2.3.1"
+    totalist "^1.0.0"
+
 sisteransi@^1.0.5:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/sisteransi/-/sisteransi-1.0.5.tgz#134d681297756437cc05ca01370d3a7a571075ed"
@@ -18312,6 +18353,11 @@ toml@^2.3.2:
   resolved "https://registry.yarnpkg.com/toml/-/toml-2.3.6.tgz#25b0866483a9722474895559088b436fd11f861b"
   integrity sha512-gVweAectJU3ebq//Ferr2JUY4WKSDe5N+z0FvjDncLGyHmIDoxgY/2Ie4qfEIDm4IS7OA6Rmdm7pdEEdMcV/xQ==
 
+totalist@^1.0.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/totalist/-/totalist-1.1.0.tgz#a4d65a3e546517701e3e5c37a47a70ac97fe56df"
+  integrity sha512-gduQwd1rOdDMGxFG1gEvhV88Oirdo2p+KjoYFU7k2g+i7n6AFFbDQ5kMPUsW0pNbfQsB/cwXvT1i4Bue0s9g5g==
+
 touch@^2.0.1:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/touch/-/touch-2.0.2.tgz#ca0b2a3ae3211246a61b16ba9e6cbf1596287164"
@@ -19106,6 +19152,21 @@ webpack-assets-manifest@^3.1.1:
     tapable "^1.0.0"
     webpack-sources "^1.0.0"
 
+webpack-bundle-analyzer@^4.3.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/webpack-bundle-analyzer/-/webpack-bundle-analyzer-4.3.0.tgz#2f3c0ca9041d5ee47fa418693cf56b4a518b578b"
+  integrity sha512-J3TPm54bPARx6QG8z4cKBszahnUglcv70+N+8gUqv2I5KOFHJbzBiLx+pAp606so0X004fxM7hqRu10MLjJifA==
+  dependencies:
+    acorn "^8.0.4"
+    acorn-walk "^8.0.0"
+    chalk "^4.1.0"
+    commander "^6.2.0"
+    gzip-size "^6.0.0"
+    lodash "^4.17.20"
+    opener "^1.5.2"
+    sirv "^1.0.7"
+    ws "^7.3.1"
+
 webpack-cli@^3.3.12:
   version "3.3.12"
   resolved "https://registry.yarnpkg.com/webpack-cli/-/webpack-cli-3.3.12.tgz#94e9ada081453cd0aa609c99e500012fd3ad2d4a"
@@ -19450,6 +19511,11 @@ ws@^7.2.3:
   resolved "https://registry.yarnpkg.com/ws/-/ws-7.4.0.tgz#a5dd76a24197940d4a8bb9e0e152bb4503764da7"
   integrity sha512-kyFwXuV/5ymf+IXhS6f0+eAFvydbaBW3zjpT6hUdAh/hbVjTIB5EHBGi0bPoCLSK2wcuz3BrEkB9LrYv1Nm4NQ==
 
+ws@^7.3.1:
+  version "7.4.1"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-7.4.1.tgz#a333be02696bd0e54cea0434e21dcc8a9ac294bb"
+  integrity sha512-pTsP8UAfhy3sk1lSk/O/s4tjD0CRwvMnzvwr4OKGX7ZvqZtUyx4KIJB5JWbkykPoc55tixMGgTNoh3k4FkNGFQ==
+
 xdg-basedir@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/xdg-basedir/-/xdg-basedir-4.0.0.tgz#4bc8d9984403696225ef83a1573cbbcb4e79db13"