app.py

import cairosvg
import gradio as gr
from PIL import Image
import os
from io import BytesIO

def show(svg_file):
    # Check if svg_file is None (no file uploaded)
    if svg_file is None:
        return None, None
    
    # Get the file content from the Gradio file object
    # svg_file is a tempfile._TemporaryFileWrapper or similar object
    with open(svg_file.name, 'rb') as f:
        svg_content = f.read()
    
    # Convert SVG content to PNG
    output_path = "./test.png"
    cairosvg.svg2png(bytestring=svg_content, write_to=output_path)
    
    # Open and return the PNG image
    png_image = Image.open(output_path)
    return png_image, output_path

with gr.Blocks() as bl:
    gr.Markdown("# SVG to PNG Converter")
    
    with gr.Row():
        with gr.Column():
            svg_input = gr.File(label="Upload SVG File", file_types=[".svg"])
            convert_btn = gr.Button("Convert")
        
        with gr.Column():
            png_output = gr.Image(type='pil', label="Converted PNG")
            download_btn = gr.File(label="Download PNG")
    
    # Connect the conversion function
    convert_btn.click(
        fn=show,
        inputs=svg_input,
        outputs=[png_output, download_btn]
    )

bl.launch()