Update app.py

app.py

@@ -227,7 +227,9 @@ def add_text_overlay(image, title_ko, author_ko,
                 
                 # Calculate position for this character
                 char_x = start_x - char_width // 2
-                char_y = start_y + i * (char_height + title_size // 10)  # Add small spacing between characters
+                # Use fixed spacing based on font size for consistent vertical spacing
+                vertical_spacing = int(title_size * 1.2)  # 120% of font size for better spacing
+                char_y = start_y + i * vertical_spacing
                 
                 # Draw shadow
                 draw.text((char_x + shadow_offset, char_y + shadow_offset), 
@@ -269,9 +271,10 @@ def add_text_overlay(image, title_ko, author_ko,
             
             # Adjust start_y for author (place it lower than title if both are vertical)
             if title_position in vertical_position_coords:
-                # Calculate how much space the title takes
+                # Calculate how much space the title takes with new spacing
                 title_length = len(title_ko) if title_ko else 0
-                start_y += title_length * (title_size + title_size // 10) + author_size
+                vertical_spacing = int(title_size * 1.2)
+                start_y += title_length * vertical_spacing + author_size
             
             for i, char in enumerate(author_text):
                 # Get character bbox
@@ -285,7 +288,9 @@ def add_text_overlay(image, title_ko, author_ko,
                 
                 # Calculate position for this character
                 char_x = start_x - char_width // 2
-                char_y = start_y + i * (char_height + author_size // 10)
+                # Use fixed spacing based on font size for consistent vertical spacing
+                vertical_spacing = int(author_size * 1.2)  # 120% of font size for better spacing
+                char_y = start_y + i * vertical_spacing
                 
                 # Draw shadow
                 draw.text((char_x + shadow_offset, char_y + shadow_offset),