app.py

import gradio as gr
from PIL import Image
import os
import tempfile

def optimize_image(image):
    img = Image.open(image)
    
    original_size = os.path.getsize(image.name) / 1024  # tamaño en KB
    
    with tempfile.TemporaryDirectory() as tmpdirname:
        lossless_output_path = os.path.join(tmpdirname, "lossless.png")
        img.save(lossless_output_path, format="PNG", optimize=True)
        lossless_size = os.path.getsize(lossless_output_path) / 1024
        lossless_img = Image.open(lossless_output_path)
        lossless_diff = original_size - lossless_size
        
        lossy_output_path = os.path.join(tmpdirname, "lossy.jpg")
        img.save(lossy_output_path, format="JPEG", quality=50, optimize=True)
        lossy_size = os.path.getsize(lossy_output_path) / 1024
        lossy_img = Image.open(lossy_output_path)
        lossy_diff = original_size - lossy_size
        
        reduced_output_path = os.path.join(tmpdirname, "reduced_resolution.jpg")
        reduced_img = img.resize((img.width // 2, img.height // 2), Image.LANCZOS)
        reduced_img.save(reduced_output_path, format="JPEG", quality=85, optimize=True)
        reduced_size = os.path.getsize(reduced_output_path) / 1024
        reduced_img = Image.open(reduced_output_path)
        reduced_diff = original_size - reduced_size

        webp_lossy_output_path = os.path.join(tmpdirname, "lossy.webp")
        img.save(webp_lossy_output_path, format="WEBP", quality=50, optimize=True)
        webp_lossy_size = os.path.getsize(webp_lossy_output_path) / 1024
        webp_lossy_img = Image.open(webp_lossy_output_path)
        webp_lossy_diff = original_size - webp_lossy_size
        
        return [
            lossless_img, f"Sin pérdida: {lossless_size:.2f} KB (diferencia: {-lossless_diff:.2f} KB)",
            lossy_img, f"Con pérdida: {lossy_size:.2f} KB (diferencia: {-lossy_diff:.2f} KB)",
            reduced_img, f"Reducción de resolución: {reduced_size:.2f} KB (diferencia: {-reduced_diff:.2f} KB)",
            webp_lossy_img, f"WebP con pérdida: {webp_lossy_size:.2f} KB (diferencia: {-webp_lossy_diff:.2f} KB)"
        ]

with gr.Blocks() as demo:
    gr.Markdown("### Optimización de imágenes para la web")

    image_input = gr.File(label="Sube tu imagen", file_types=['image'])
    optimize_button = gr.Button("Optimizar")

    with gr.Row():
        optimized_output1 = gr.Image(label="Optimización sin pérdida")
        optimized_size1 = gr.Text()
        
        optimized_output2 = gr.Image(label="Optimización con pérdida")
        optimized_size2 = gr.Text()

        optimized_output3 = gr.Image(label="Reducción de resolución")
        optimized_size3 = gr.Text()

        optimized_output4 = gr.Image(label="Optimización WebP con pérdida")
        optimized_size4 = gr.Text()

    optimize_button.click(
        fn=optimize_image,
        inputs=image_input,
        outputs=[
            optimized_output1, optimized_size1,
            optimized_output2, optimized_size2,
            optimized_output3, optimized_size3,
            optimized_output4, optimized_size4
        ]
    )

demo.launch()