Bangla Text Renderer

Perfect Bangla/Bengali text rendering on images with correct vowel positioning and joint letter handling.

Problem

When using PIL/Pillow to render Bangla text on images, vowel marks (কার) like ি, ে, ৈ often appear in the wrong position - one letter behind where they should be. This package fixes that issue.

Installation

pip install bangla-text-renderer

Quick Start

from bangla_text_renderer import BanglaTextRenderer
from PIL import Image

# Create renderer with your Bangla font
renderer = BanglaTextRenderer(
    font_path='NotoSansBengali-Bold.ttf', # give your font name here /// download your font .ttf file and put on windows\fonts directory
    font_size=48,
    color=(255, 255, 255, 255)  # White
)

# Render text
text = "বাংলা লেখা সঠিকভাবে"
img = renderer.render_text(text, width=800)

# Save image
img.save('output.png')

Features

• ✅ Perfect vowel positioning - Fixes misplaced vowel marks (ি, ী, ে, ৈ, etc.)
• ✅ Joint letter support - Handles যুক্তাক্ষর correctly
• ✅ Text wrapping - Automatic word wrapping
• ✅ Multiple alignments - Left, center, right
• ✅ Shadow effects - Built-in text shadow
• ✅ Unicode normalization - Proper NFC normalization

Advanced Usage

Text with Shadow

img = renderer.render_text_with_shadow(
    text="বাংলা টেক্সট",
    width=800,
    shadow_offset=3,
    shadow_color=(0, 0, 0, 180)
)

Custom Alignment and Line Spacing

img = renderer.render_text(
    text="বাংলা লেখা",
    width=800,
    max_lines=3,
    line_spacing=15,
    align='center',  # 'left', 'center', or 'right'
    background=(255, 255, 255, 255)  # White background
)

Integration with Existing Images

from PIL import Image

# Load base image
base_img = Image.open('background.jpg').convert('RGBA')

# Render Bangla text
text_img = renderer.render_text("বাংলা", width=500)

# Paste text on base image
base_img.paste(text_img, (100, 100), text_img)
base_img.save('result.png')

How It Works

The package implements proper Bangla text shaping by:

1. Normalizing text to Unicode NFC form
2. Splitting combined vowel signs (ো, ৌ)
3. Reordering pre-base vowels to appear before consonants
4. Processing joint letters (যুক্তাক্ষর) with virama (্)

This ensures text renders exactly as it should appear visually.

Supported Fonts

Works with any Unicode Bangla font:

• Noto Sans Bengali
• Noto Serif Bengali
• Kalpurush
• SolaimanLipi
• Vrinda
• And more...

Requirements

• Python 3.7+
• Pillow 8.0.0+

License

MIT License

Contributing

Contributions welcome! Please feel free to submit a Pull Request.

Support

If you encounter any issues, please open an issue on GitHub.