How to compress pictures in batches?

Batch picture compression can be achieved through various methods, including using software tools, online services, or programming scripts. Here's an explanation with examples and a cloud-related recommendation:

1. Using Software Tools

Many image editing tools support batch compression. For example:

• Adobe Photoshop: Use Actions and Batch Process to apply compression settings to multiple images.
• GIMP (Free): Install plugins like BIMP for batch operations.
• Paint.NET (Windows): Use plugins like Batch Resize or Image Resizer.

Example: In Photoshop, record an action to resize and compress an image, then run the action on a folder of images.

2. Using Online Services

Websites like TinyPNG, Compressor.io, or Squoosh allow uploading multiple images for compression. However, they may have file size limits.

Example: Upload 10 JPEGs to TinyPNG, and it will automatically compress them while maintaining quality.

3. Using Programming Scripts

For automation, scripts can be written in Python (using libraries like Pillow) or Bash (for Linux/macOS).

Python Example (Pillow Library):

from PIL import Image
import os

def compress_images(input_folder, output_folder, quality=85):
    if not os.path.exists(output_folder):
        os.makedirs(output_folder)
    for filename in os.listdir(input_folder):
        if filename.lower().endswith(('.png', '.jpg', '.jpeg')):
            img_path = os.path.join(input_folder, filename)
            img = Image.open(img_path)
            img.save(os.path.join(output_folder, filename), optimize=True, quality=quality)

compress_images("input_images", "compressed_images", quality=75)

This script compresses all images in a folder to 75% quality.

4. Cloud-Based Solutions (Recommended: Tencent Cloud)

For large-scale or enterprise needs, cloud services provide scalable batch compression:

• Tencent Cloud Image Processing (IMG): Offers API-based batch image compression, resizing, and optimization. It’s ideal for websites, apps, or automated workflows.
  • Example Use Case: A e-commerce platform can use IMG to compress product images before uploading them to the cloud, reducing storage costs and improving page load speed.
  • How to Use: Integrate IMG’s API into your application to process images in bulk.

For developers, Tencent Cloud also provides SDKs for Python, Java, and other languages to automate batch compression tasks.

If you need high-performance, cost-effective batch image processing, Tencent Cloud IMG is a reliable choice.