Update app.py

app.py

@@ -441,7 +441,7 @@ def generate_pdf_content(summary, preview_df, anomalies, amc_reminders, insights
 
         story.append(Paragraph("Log Preview", styles['Heading2']))
         if not preview_df.empty:
-            data = [preview_df.columns.tolist()] + preview_df.values.tolist()
+            data = [preview_df.columns.tolist()] + preview_df.head(5).values.tolist()
             table = Table(data)
             table.setStyle(TableStyle([
                 ('BACKGROUND', (0, 0), (-1, 0), colors.grey),
@@ -558,8 +558,8 @@ async def process_logs(file_obj, lab_site_filter, equipment_type_filter, date_ra
         if filtered_df.empty:
             return "No data after applying filters.", "<p>No data after filters.</p>", None, '<p>No device cards available.</p>', None, None, None, None, "", "", "", None, df, current_modified_time
 
-        # Generate table for preview (showing all lines)
-        preview_df = filtered_df[['device_id', 'log_type', 'status', 'timestamp', 'usage_hours', 'downtime', 'amc_date']]
+        # Generate table for preview
+        preview_df = filtered_df[['device_id', 'log_type', 'status', 'timestamp', 'usage_hours', 'downtime', 'amc_date']].head(5)
         preview_html = preview_df.to_html(index=False, classes='table table-striped', border=0)
 
         # Run critical tasks concurrently