diff --git a/build.sh b/build.sh
index 8151112..7190366 100755
--- a/build.sh
+++ b/build.sh
@@ -26,6 +26,9 @@ build_blog() {
     /bin/rm -v "${DST_DIR}/genindex.html"
     /bin/rm -v "${DST_DIR}/objects.inv"
     /bin/rm -rv "${DST_DIR}/_sources"
+
+    # Minify files
+    python minify.py "${DST_DIR}"
 }
 
 [ "${1}" == 'live' ] && dev_live || build_blog
diff --git a/checks.sh b/checks.sh
index 7ab054b..d713a55 100755
--- a/checks.sh
+++ b/checks.sh
@@ -4,9 +4,9 @@ set -eu
 FOLDER='sources'
 
 check_python_files() {
-    python -m ruff format "${FOLDER}"
-    python -m ruff --fix "${FOLDER}"
-    python -m mypy "${FOLDER}"
+    python -m ruff format "${FOLDER}" ./*.py
+    python -m ruff --fix "${FOLDER}" ./*.py
+    python -m mypy "${FOLDER}" ./*.py
 }
 
 check_shell_file() {
diff --git a/minify.py b/minify.py
new file mode 100644
index 0000000..9de635c
--- /dev/null
+++ b/minify.py
@@ -0,0 +1,40 @@
+from functools import partial
+from pathlib import Path
+
+import minify_html
+import rcssmin
+import rjsmin
+
+MINIFIER = {
+    ".css": rcssmin.cssmin,
+    ".js": rjsmin.jsmin,
+    ".html": partial(minify_html.minify, minify_css=True, minify_js=True),
+}
+
+
+def main(folder: str) -> None:
+    total_saved = 0
+
+    for file in Path(folder).glob("**/*"):
+        if not file.is_file() or not (minifier := MINIFIER.get(file.suffix)):
+            continue
+
+        content = file.read_text()
+        minified = minifier(content)
+        if content == minified:
+            continue
+
+        file.write_text(minified)
+        size_old = len(content)
+        size_new = len(minified)
+        total_saved += size_old - size_new
+        diff = 100 - (size_new * 100 / size_old)
+        print(f"Minified {file.name} (-{diff:.2f}%)", flush=True)
+
+    print(f"Saved {total_saved:,} bytes", flush=True)
+
+
+if __name__ == "__main__":
+    import sys
+
+    main(sys.argv[1])
diff --git a/requirements.txt b/requirements.txt
index 6e61f3f..3dc4c77 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,7 @@
+minify-html==0.15.0
 myst-parser==2.0.0
+rcssmin==1.1.2
+rjsmin==1.2.2
 shibuya==2024.1.17
 sphinx==7.2.6
 sphinx-copybutton==0.5.2