diff --git a/.eleventy.js b/.eleventy.js
index 7377f83..915811c 100644
--- a/.eleventy.js
+++ b/.eleventy.js
@@ -3,6 +3,7 @@ const markdownItAttrs = require("markdown-it-attrs");
 const autoprefixer = require("autoprefixer");
 const markdownIt = require("markdown-it");
 const htmlmin = require("html-minifier");
+const purgecss = require("purgecss");
 const postcss = require("postcss");
 const yaml = require("js-yaml");
 const path = require("path");
@@ -14,6 +15,8 @@ const markdownLib = markdownIt({
   linkify: true,
 }).use(markdownItAttrs);
 
+const pattern = new RegExp("(<style>)(.*)?(</style>)", "gm");
+
 module.exports = function (eleventyConfig) {
   eleventyConfig.addDataExtension("yml", (contents) => yaml.load(contents));
   eleventyConfig.addGlobalData("username", "Laureηt");
@@ -70,6 +73,27 @@ module.exports = function (eleventyConfig) {
     }
   });
 
+  eleventyConfig.addTransform(
+    "purgestyle",
+    async function (content, outputPath) {
+      if (
+        process.env.NODE_ENV === "production" &&
+        outputPath &&
+        outputPath.endsWith(".html")
+      ) {
+        const [{ css: result }] = await new purgecss.PurgeCSS().purge({
+          content: [
+            { raw: content.replace(pattern, "$1$3"), extension: "html" },
+          ],
+          css: [{ raw: pattern.exec(content)[2] }],
+        });
+        console.log(`[PURGECSS] ${outputPath} purged`);
+        return content.replace(pattern, `<style>${result}</style>`);
+      }
+      return content;
+    }
+  );
+
   eleventyConfig.addShortcode("year", () => {
     const year = new Date().getFullYear();
     return year.toString();
diff --git a/package.json b/package.json
index faed6cc..599aca0 100644
--- a/package.json
+++ b/package.json
@@ -18,6 +18,7 @@
     "markdown-it-attrs": "^4.1.0",
     "npm-run-all": "^4.1.5",
     "postcss": "^8.4.5",
+    "purgecss": "^4.1.3",
     "sass": "^1.42.1"
   }
 }
diff --git a/yarn.lock b/yarn.lock
index 354bbba..fa86dc5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -553,6 +553,11 @@ commander@^5.1.0:
   resolved "https://registry.yarnpkg.com/commander/-/commander-5.1.0.tgz#46abbd1652f8e059bddaef99bbdcb2ad9cf179ae"
   integrity sha512-P0CysNDQ7rtVw4QIQtm+MRxV66vKFSvlsQvGYXZWR3qFU0jlMKHZZZgw8e+8DSah4UDKMqnknRDQz+xuQXQ/Zg==
 
+commander@^8.0.0:
+  version "8.3.0"
+  resolved "https://registry.yarnpkg.com/commander/-/commander-8.3.0.tgz#4837ea1b2da67b9c616a67afbb0fafee567bca66"
+  integrity sha512-OkTL9umf+He2DZkUq8f8J9of7yL6RJKI24dVITBmNfZBmri9zYZQrKkuXiKhyfPSu8tUhnVBB1iKXevvnlR4Ww==
+
 component-bind@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/component-bind/-/component-bind-1.0.0.tgz#00c608ab7dcd93897c0009651b1d3a8e1e73bbd1"
@@ -634,6 +639,11 @@ cross-spawn@^6.0.5:
     shebang-command "^1.2.0"
     which "^1.2.9"
 
+cssesc@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/cssesc/-/cssesc-3.0.0.tgz#37741919903b868565e1c09ea747445cd18983ee"
+  integrity sha512-/Tb/JcjK111nNScGob5MNtsntNM1aCNUDipB/TkwZFhyDrrE47SOx/18wF2bbjgc3ZzCSKW1T5nt5EbFoAz/Vg==
+
 debug@2.6.9, debug@^2.2.0:
   version "2.6.9"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.9.tgz#5d128515df134ff327e90a4c93f4e077a536341f"
@@ -1037,7 +1047,7 @@ glob-parent@^5.1.2, glob-parent@~5.1.2:
   dependencies:
     is-glob "^4.0.1"
 
-glob@^7.0.3, glob@^7.1.3:
+glob@^7.0.3, glob@^7.1.3, glob@^7.1.7:
   version "7.2.0"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.2.0.tgz#d15535af7732e02e948f4c41628bd910293f6023"
   integrity sha512-lmLf6gtyrPq8tTjSmrO94wBeQbFR3HbLHbuyD69wuyQkImp2hWqMGB47OX65FBkPffO641IP9jWa1z4ivqG26Q==
@@ -1995,12 +2005,20 @@ portscanner@2.1.1:
     async "1.5.2"
     is-number-like "^1.0.3"
 
+postcss-selector-parser@^6.0.6:
+  version "6.0.9"
+  resolved "https://registry.yarnpkg.com/postcss-selector-parser/-/postcss-selector-parser-6.0.9.tgz#ee71c3b9ff63d9cd130838876c13a2ec1a992b2f"
+  integrity sha512-UO3SgnZOVTwu4kyLR22UQ1xZh086RyNZppb7lLAKBFK8a32ttG5i87Y/P3+2bRSjZNyJ1B7hfFNo273tKe9YxQ==
+  dependencies:
+    cssesc "^3.0.0"
+    util-deprecate "^1.0.2"
+
 postcss-value-parser@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz#723c09920836ba6d3e5af019f92bc0971c02e514"
   integrity sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==
 
-postcss@^8.4.5:
+postcss@^8.3.5, postcss@^8.4.5:
   version "8.4.5"
   resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.5.tgz#bae665764dfd4c6fcc24dc0fdf7e7aa00cc77f95"
   integrity sha512-jBDboWM8qpaqwkMwItqTQTiFikhs/67OYVvblFFTM7MrZjt6yMKd6r2kgXizEbTTljacm4NldIlZnhbjr84QYg==
@@ -2143,6 +2161,16 @@ pug@^3.0.2:
     pug-runtime "^3.0.1"
     pug-strip-comments "^2.0.0"
 
+purgecss@^4.1.3:
+  version "4.1.3"
+  resolved "https://registry.yarnpkg.com/purgecss/-/purgecss-4.1.3.tgz#683f6a133c8c4de7aa82fe2746d1393b214918f7"
+  integrity sha512-99cKy4s+VZoXnPxaoM23e5ABcP851nC2y2GROkkjS8eJaJtlciGavd7iYAw2V84WeBqggZ12l8ef44G99HmTaw==
+  dependencies:
+    commander "^8.0.0"
+    glob "^7.1.7"
+    postcss "^8.3.5"
+    postcss-selector-parser "^6.0.6"
+
 qs@6.2.3:
   version "6.2.3"
   resolved "https://registry.yarnpkg.com/qs/-/qs-6.2.3.tgz#1cfcb25c10a9b2b483053ff39f5dfc9233908cfe"
@@ -2680,6 +2708,11 @@ upper-case@^1.1.1:
   resolved "https://registry.yarnpkg.com/upper-case/-/upper-case-1.1.3.tgz#f6b4501c2ec4cdd26ba78be7222961de77621598"
   integrity sha1-9rRQHC7EzdJrp4vnIilh3ndiFZg=
 
+util-deprecate@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"
+  integrity sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=
+
 utils-merge@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/utils-merge/-/utils-merge-1.0.1.tgz#9f95710f50a267947b2ccc124741c1028427e713"