diff --git a/lib/s3.ts b/lib/s3.ts
index 025005eb..fbd98b2d 100644
--- a/lib/s3.ts
+++ b/lib/s3.ts
@@ -1,13 +1,27 @@
 import { S3Client, ListObjectsV2Command, GetObjectCommand, PutObjectCommand, DeleteObjectCommand } from '@aws-sdk/client-s3';
 import { getSignedUrl } from '@aws-sdk/s3-request-presigner';
 
-// Simplified S3 configuration with consistent naming
+/**
+ * S3/MinIO Configuration
+ * 
+ * IMPORTANT: Set these environment variables in your .env file:
+ * 
+ * MINIO_S3_UPLOAD_BUCKET_URL=https://your-minio-instance.com/
+ * MINIO_AWS_REGION=your-region
+ * MINIO_AWS_S3_UPLOAD_BUCKET_NAME=your-bucket-name
+ * MINIO_ACCESS_KEY=your-access-key
+ * MINIO_SECRET_KEY=your-secret-key
+ * 
+ * Alternative credentials (fallback):
+ * AWS_ACCESS_KEY_ID=your-aws-access-key
+ * AWS_SECRET_ACCESS_KEY=your-aws-secret-key
+ */
 export const S3_CONFIG = {
-  endpoint: process.env.S3_ENDPOINT || 'https://dome-api.slm-lab.net/',
-  region: process.env.S3_REGION || 'eu-east-1',
-  bucket: process.env.S3_BUCKET || 'pages',
-  accessKey: process.env.S3_ACCESS_KEY,
-  secretKey: process.env.S3_SECRET_KEY,
+  endpoint: process.env.MINIO_S3_UPLOAD_BUCKET_URL,
+  region: process.env.MINIO_AWS_REGION,
+  bucket: process.env.MINIO_AWS_S3_UPLOAD_BUCKET_NAME,
+  accessKey: process.env.MINIO_ACCESS_KEY || process.env.AWS_ACCESS_KEY_ID,
+  secretKey: process.env.MINIO_SECRET_KEY || process.env.AWS_SECRET_ACCESS_KEY,
 }
 
 // Initialize S3 client with standard configuration
@@ -30,6 +44,25 @@ if (S3_CONFIG.accessKey && S3_CONFIG.secretKey) {
 // Create S3 client
 export const s3Client = new S3Client(s3Config);
 
+// Check for required environment variables
+if (!S3_CONFIG.endpoint || !S3_CONFIG.bucket) {
+  console.error('ERROR: Missing required S3 environment variables!');
+  console.error('Please make sure your .env file contains:');
+  console.error('- MINIO_S3_UPLOAD_BUCKET_URL');
+  console.error('- MINIO_AWS_S3_UPLOAD_BUCKET_NAME');
+  console.error('- MINIO_ACCESS_KEY or AWS_ACCESS_KEY_ID');
+  console.error('- MINIO_SECRET_KEY or AWS_SECRET_ACCESS_KEY');
+}
+
+// Log configuration for debugging (without exposing credentials)
+console.log('S3 Configuration:', {
+  endpoint: S3_CONFIG.endpoint || 'MISSING!',
+  region: S3_CONFIG.region || 'MISSING!',
+  bucket: S3_CONFIG.bucket || 'MISSING!',
+  hasAccessKey: !!S3_CONFIG.accessKey || 'MISSING!',
+  hasSecretKey: !!S3_CONFIG.secretKey || 'MISSING!',
+});
+
 // Helper functions for S3 operations
 
 // List objects in a "folder" for a specific user
@@ -165,10 +198,10 @@ export async function generatePresignedUrl(key: string, expiresIn = 3600) {
       Bucket: S3_CONFIG.bucket,
       Key: key
     });
-    
+
     return await getSignedUrl(s3Client, command, { expiresIn });
   } catch (error) {
     console.error('Error generating presigned URL:', error);
     throw error;
   }
-} 
\ No newline at end of file
+}
\ No newline at end of file