diff --git a/_quarto.yml b/_quarto.yml
index 0189beb..2d180b2 100644
--- a/_quarto.yml
+++ b/_quarto.yml
@@ -15,13 +15,15 @@ project:
     - "!static/"
     - "!templates/"
     - "!themes/"
+  post-render:
+    - python3 reorganize-urls.py
 
 filters:
   - vega-lite.lua
 
 website:
   title: "Oleh Omelchenko"
-  site-url: "https://olehomelchenko.com"
+  site-url: "https://olehomelchenko.com/"
   description: "Data visualization and analysis blog"
 
   navbar:
diff --git a/reorganize-urls.py b/reorganize-urls.py
new file mode 100755
index 0000000..32fb9b2
--- /dev/null
+++ b/reorganize-urls.py
@@ -0,0 +1,38 @@
+#!/usr/bin/env python3
+"""
+Post-render script to reorganize HTML files into pretty URL structure.
+Converts posts/post-name.html to posts/post-name/index.html for trailing slash support.
+"""
+import os
+import shutil
+from pathlib import Path
+
+def reorganize_html_files(site_dir="_site"):
+    """Reorganize HTML files into directory structure for pretty URLs."""
+    site_path = Path(site_dir)
+
+    # Directories to process (add more as needed)
+    directories_to_process = ["posts", "til", "portfolio", "projects"]
+
+    for directory in directories_to_process:
+        dir_path = site_path / directory
+        if not dir_path.exists():
+            continue
+
+        # Find all HTML files except index.html
+        for html_file in dir_path.glob("*.html"):
+            if html_file.name == "index.html":
+                continue
+
+            # Create directory with same name as file (without .html)
+            new_dir = dir_path / html_file.stem
+            new_dir.mkdir(exist_ok=True)
+
+            # Move file to directory as index.html
+            new_file = new_dir / "index.html"
+            shutil.move(str(html_file), str(new_file))
+            print(f"Moved {html_file} -> {new_file}")
+
+if __name__ == "__main__":
+    reorganize_html_files()
+    print("URL reorganization complete!")