diff --git a/data/nodes.db b/data/nodes.db
index 119614a..0c9fc84 100644
Binary files a/data/nodes.db and b/data/nodes.db differ
diff --git a/src/scripts/sanitize-templates.ts b/src/scripts/sanitize-templates.ts
index 988d724..6b87165 100644
--- a/src/scripts/sanitize-templates.ts
+++ b/src/scripts/sanitize-templates.ts
@@ -2,32 +2,50 @@
 import { createDatabaseAdapter } from '../database/database-adapter';
 import { logger } from '../utils/logger';
 import { TemplateSanitizer } from '../utils/template-sanitizer';
+import { gunzipSync, gzipSync } from 'zlib';
 
 async function sanitizeTemplates() {
   console.log('🧹 Sanitizing workflow templates in database...\n');
-  
+
   const db = await createDatabaseAdapter('./data/nodes.db');
   const sanitizer = new TemplateSanitizer();
-  
+
   try {
-    // Get all templates
-    const templates = db.prepare('SELECT id, name, workflow_json FROM templates').all() as any[];
+    // Get all templates - check both old and new format
+    const templates = db.prepare('SELECT id, name, workflow_json, workflow_json_compressed FROM templates').all() as any[];
     console.log(`Found ${templates.length} templates to check\n`);
-    
+
     let sanitizedCount = 0;
     const problematicTemplates: any[] = [];
-    
+
     for (const template of templates) {
-      if (!template.workflow_json) {
-        continue; // Skip templates without workflow data
+      let originalWorkflow: any = null;
+      let useCompressed = false;
+
+      // Try compressed format first (newer format)
+      if (template.workflow_json_compressed) {
+        try {
+          const buffer = Buffer.from(template.workflow_json_compressed, 'base64');
+          const decompressed = gunzipSync(buffer).toString('utf-8');
+          originalWorkflow = JSON.parse(decompressed);
+          useCompressed = true;
+        } catch (e) {
+          console.log(`⚠️ Failed to decompress template ${template.id}, trying uncompressed`);
+        }
       }
 
-      let originalWorkflow;
-      try {
-        originalWorkflow = JSON.parse(template.workflow_json);
-      } catch (e) {
-        console.log(`⚠️ Skipping template ${template.id}: Invalid JSON`);
-        continue;
+      // Fall back to uncompressed format (deprecated)
+      if (!originalWorkflow && template.workflow_json) {
+        try {
+          originalWorkflow = JSON.parse(template.workflow_json);
+        } catch (e) {
+          console.log(`⚠️ Skipping template ${template.id}: Invalid JSON in both formats`);
+          continue;
+        }
+      }
+
+      if (!originalWorkflow) {
+        continue; // Skip templates without workflow data
       }
 
       const { sanitized: sanitizedWorkflow, wasModified } = sanitizer.sanitizeWorkflow(originalWorkflow);
@@ -35,18 +53,24 @@ async function sanitizeTemplates() {
       if (wasModified) {
         // Get detected tokens for reporting
         const detectedTokens = sanitizer.detectTokens(originalWorkflow);
-        
-        // Update the template with sanitized version
-        const stmt = db.prepare('UPDATE templates SET workflow_json = ? WHERE id = ?');
-        stmt.run(JSON.stringify(sanitizedWorkflow), template.id);
-        
+
+        // Update the template with sanitized version in the same format
+        if (useCompressed) {
+          const compressed = gzipSync(JSON.stringify(sanitizedWorkflow)).toString('base64');
+          const stmt = db.prepare('UPDATE templates SET workflow_json_compressed = ? WHERE id = ?');
+          stmt.run(compressed, template.id);
+        } else {
+          const stmt = db.prepare('UPDATE templates SET workflow_json = ? WHERE id = ?');
+          stmt.run(JSON.stringify(sanitizedWorkflow), template.id);
+        }
+
         sanitizedCount++;
         problematicTemplates.push({
           id: template.id,
           name: template.name,
           tokens: detectedTokens
         });
-        
+
         console.log(`✅ Sanitized template ${template.id}: ${template.name}`);
         detectedTokens.forEach(token => {
           console.log(`   - Found: ${token.substring(0, 20)}...`);