diff --git a/frontend/app.js b/frontend/app.js
index bce1f50..ce3e3ff 100644
--- a/frontend/app.js
+++ b/frontend/app.js
@@ -1182,9 +1182,9 @@ function noteApp() {
             const lines = content.split('\n');
             const slugCounts = {}; // Track duplicate slugs
             
-            // Skip frontmatter
+            // Skip frontmatter and code blocks
             let inFrontmatter = false;
-            let frontmatterEnded = false;
+            let inCodeBlock = false;
             
             for (let i = 0; i < lines.length; i++) {
                 const line = lines[i];
@@ -1197,11 +1197,19 @@ function noteApp() {
                 if (inFrontmatter) {
                     if (line.trim() === '---') {
                         inFrontmatter = false;
-                        frontmatterEnded = true;
                     }
                     continue;
                 }
                 
+                // Handle fenced code blocks (``` or ~~~)
+                if (line.trim().startsWith('```') || line.trim().startsWith('~~~')) {
+                    inCodeBlock = !inCodeBlock;
+                    continue;
+                }
+                if (inCodeBlock) {
+                    continue;
+                }
+                
                 // Match heading lines (# to ######)
                 const match = line.match(/^(#{1,6})\s+(.+)$/);
                 if (match) {