Improved Docs minify (#17816)

Signed-off-by: UltralyticsAssistant <web@ultralytics.com>
Co-authored-by: UltralyticsAssistant <web@ultralytics.com>

.github/workflows/docs.yml

@@ -48,7 +48,7 @@ jobs:
           python-version: "3.x"
       - uses: astral-sh/setup-uv@v4
       - name: Install Dependencies
-        run: uv pip install --system ruff black tqdm mkdocs-material "mkdocstrings[python]" mkdocs-jupyter mkdocs-redirects mkdocs-ultralytics-plugin mkdocs-macros-plugin
+        run: uv pip install --system ruff black tqdm mkdocs-material "mkdocstrings[python]" mkdocs-jupyter mkdocs-redirects mkdocs-ultralytics-plugin mkdocs-macros-plugin csscompressor jsmin
       - name: Ruff fixes
         continue-on-error: true
         run: ruff check --fix --unsafe-fixes --select D --ignore=D100,D104,D203,D205,D212,D213,D401,D406,D407,D413 .

docs/build_docs.py

@@ -238,32 +238,41 @@ def remove_macros():
     print(f"Removed {len(macros_indices)} URLs containing '/macros/' from {sitemap}")
 
 
-def minify_html_files():
-    """Minifies all HTML files in the site directory and prints reduction stats."""
+def minify_files(html=True, css=True, js=True):
+    """Minifies HTML, CSS, and JS files and prints total reduction stats."""
+    minify, compress, jsmin = None, None, None
     try:
-        from minify_html import minify  # pip install minify-html
-    except ImportError:
+        if html:
+            from minify_html import minify
+        if css:
+            from csscompressor import compress
+        if js:
+            import jsmin
+    except ImportError as e:
+        print(f"Missing required package: {str(e)}")
         return
 
-    total_original_size = 0
-    total_minified_size = 0
-    for html_file in tqdm(SITE.rglob("*.html"), desc="Minifying HTML files"):
-        with open(html_file, encoding="utf-8") as f:
-            content = f.read()
-
-        original_size = len(content)
-        minified_content = minify(content, keep_closing_tags=True, minify_css=True, minify_js=True)
-        minified_size = len(minified_content)
-
-        total_original_size += original_size
-        total_minified_size += minified_size
-
-        with open(html_file, "w", encoding="utf-8") as f:
-            f.write(minified_content)
-
-    total_reduction = total_original_size - total_minified_size
-    total_percent_reduction = (total_reduction / total_original_size) * 100
-    print(f"Minify HTML reduction: {total_percent_reduction:.2f}% " f"({total_reduction / 1024:.2f} KB saved)")
+    stats = {}
+    for ext, minifier in {
+        "html": (lambda x: minify(x, keep_closing_tags=True, minify_css=True, minify_js=True)) if html else None,
+        "css": compress if css else None,
+        "js": jsmin.jsmin if js else None,
+    }.items():
+        if not minifier:
+            continue
+
+        stats[ext] = {"original": 0, "minified": 0}
+        for f in tqdm(SITE.rglob(f"*.{ext}"), desc=f"Minifying {ext.upper()}"):
+            content = f.read_text(encoding="utf-8")
+            minified = minifier(content)
+            stats[ext]["original"] += len(content)
+            stats[ext]["minified"] += len(minified)
+            f.write_text(minified, encoding="utf-8")
+
+    for ext, data in stats.items():
+        if data["original"]:
+            r = data["original"] - data["minified"]  # reduction
+            print(f"Total {ext.upper()} reduction: {(r / data['original']) * 100:.2f}% ({r / 1024:.2f} KB saved)")
 
 
 def main():
@@ -279,8 +288,8 @@ def main():
     # Update docs HTML pages
     update_docs_html()
 
-    # Minify HTML files
-    minify_html_files()
+    # Minify files
+    minify_files(html=False)
 
     # Show command to serve built website
     print('Docs built correctly ✅\nServe site at http://localhost:8000 with "python -m http.server --directory site"')