diff --git a/server/download.ts b/server/download.ts
new file mode 100644
index 0000000..f8c227c
--- /dev/null
+++ b/server/download.ts
@@ -0,0 +1,99 @@
+import { Express, Request, Response } from "express";
+import archiver from "archiver";
+import path from "path";
+import fs from "fs";
+import debugLib from "debug";
+import { isAuthenticated } from "./authorization";
+
+const debug = debugLib('api:download');
+
+/**
+ * Sets up download endpoints for the application
+ * @param app Express application
+ */
+export function setupDownloadRoutes(app: Express) {
+  // Endpoint to download the entire application as a zip file
+  app.get('/api/download/app', isAuthenticated, (req: Request, res: Response) => {
+    debug('Download application requested');
+    
+    const archive = archiver('zip', {
+      zlib: { level: 9 } // Compression level
+    });
+    
+    // Set appropriate headers
+    res.attachment('ad-management-platform.zip');
+    res.setHeader('Content-Type', 'application/zip');
+    
+    // Pipe archive data to the response
+    archive.pipe(res);
+    
+    // Get the root directory (current working directory)
+    const rootDir = process.cwd();
+    
+    // Add files and directories to include
+    const includeFiles = [
+      'client',
+      'server', 
+      'shared',
+      'migrations',
+      'package.json',
+      'tsconfig.json',
+      'tailwind.config.ts',
+      'theme.json',
+      'postcss.config.js',
+      'vite.config.ts',
+      'drizzle.config.ts',
+      'Dockerfile',
+      'README.md'
+    ];
+    
+    // Exclude patterns (node_modules, .git, etc.)
+    const excludePatterns = [
+      '.git',
+      'node_modules',
+      'dist',
+      '.cache',
+      '.replit',
+      '.env'
+    ];
+    
+    // Helper function to check if path should be excluded
+    const shouldExclude = (filePath: string): boolean => {
+      return excludePatterns.some(pattern => filePath.includes(pattern));
+    };
+    
+    // Add each included file/directory
+    includeFiles.forEach(filePath => {
+      const fullPath = path.join(rootDir, filePath);
+      
+      if (fs.existsSync(fullPath)) {
+        const stats = fs.statSync(fullPath);
+        
+        if (stats.isFile() && !shouldExclude(fullPath)) {
+          // Add individual file
+          archive.file(fullPath, { name: filePath });
+          debug(`Added file: ${filePath}`);
+        } else if (stats.isDirectory()) {
+          // Add directory recursively, with exclusions
+          archive.glob('**/*', { 
+            cwd: fullPath,
+            ignore: excludePatterns,
+            dot: true
+          }, { prefix: filePath });
+          debug(`Added directory: ${filePath}`);
+        }
+      } else {
+        debug(`Path not found: ${fullPath}`);
+      }
+    });
+    
+    // Handle errors
+    archive.on('error', (err) => {
+      debug(`Error creating archive: ${err.message}`);
+      res.status(500).send({ error: 'Failed to create download archive' });
+    });
+    
+    // Finalize archive
+    archive.finalize();
+  });
+}
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