diff --git a/eleventy.config.js b/eleventy.config.js
index fe64b80..1f7753b 100644
--- a/eleventy.config.js
+++ b/eleventy.config.js
@@ -403,16 +403,16 @@ export default function (eleventyConfig) {
     if (!outputPath || !outputPath.endsWith(".html")) return content;
 
     // Derive correct page URL and OG slug from outputPath (immune to race condition)
-    // Content pages match: .../type/yyyy/mm/dd/slug/index.html
+    // Content pages match: .../type/slug/index.html
     const postMatch = outputPath.match(
-      /\/([\w-]+)\/(\d{4})\/(\d{2})\/(\d{2})\/([\w-]+)\/index\.html$/
+      /\/([\w-]+)\/([\w-]+)\/index\.html$/
     );
 
     if (postMatch) {
-      const [, type, year, month, day, slug] = postMatch;
-      const pageUrlPath = `/${type}/${year}/${month}/${day}/${slug}/`;
+      const [, type, slug] = postMatch;
+      const pageUrlPath = `/${type}/${slug}/`;
       const correctFullUrl = `${siteUrl}${pageUrlPath}`;
-      const ogSlug = `${year}-${month}-${day}-${slug}`;
+      const ogSlug = slug;
       const hasOg = hasOgImage(ogSlug);
       const ogImageUrl = hasOg
         ? `${siteUrl}/og/${ogSlug}.png`
diff --git a/lib/og.js b/lib/og.js
index ab3e3ad..a682cce 100644
--- a/lib/og.js
+++ b/lib/og.js
@@ -126,16 +126,15 @@ function formatDate(dateStr) {
 }
 
 /**
- * Use the date+slug (e.g., 2024-03-31-my-post) as the OG image slug.
- * Matches the canonical permalink structure.
+ * Use the pure slug (e.g., my-post) as the OG image slug.
+ * Matches the plain URL structure.
  */
 function toOgSlug(filePath, fm) {
-  // filePath: content/{type}/{yyyy}-{MM}-{dd}-{slug}.md
+  // filePath: content/{type}/{slug}.md
   const filename = basename(filePath);
-  const match = filename.match(/(\d{4})-(\d{2})-(\d{2})-(.+)\.md$/);
+  const match = filename.match(/^([\w-]+)\.md$/);
   if (match) {
-    const [, year, month, day, slug] = match;
-    return `${year}-${month}-${day}-${slug}`;
+    return match[1];
   }
   // fallback: use filename only (without extension)
   return filename.replace(/\.md$/, "");