Update app.py

app.py

@@ -51,7 +51,7 @@ if uploaded_file is not None and analyze_button:
         # Optimized prompt for additional clarity and detail
         prompt_text = (
             "As an expert in image accessibility and alternative text, succinctly describe the image provided in less than 150 characters. "
-            "Focus on capturing the essence and key elements of the image in a single, clear, and concise sentence for use as alt text."
+            "Focus on capturing the essence and key elements of the image in three or fewer clear and concise sentences for use as alt text."
             "Your description should form a clear, well-structured, and factual paragraph that avoids bullet points, focusing on creating a seamless narrative that serves as effective alternative text for accessibility purposes."
         )