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Whether you need to compress multiple images at once for your e-commerce product gallery, resize images for social media like Xiaohongshu (小红书) or Douyin (抖音), or prepare batch photos for your website before publishing, our batch image compressor and resizer handles it all — directly in your browser, with no upload and no registration required.

Related Tools & Guides

→ Single Image Compressor — Compress one image at a time
→ E-commerce Image Guide — Best practices for product photos
→ Compression Tips — Get the best quality-to-size ratio
→ Bulk Image Compression Guide — Learn batch optimization strategies
→ Batch Image Resizer — Resize single or multiple images

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Frequently Asked Questions

How many images can I compress at once?▼

There is no strict limit on the number of images you can add to the queue. However, since all processing happens in your browser, performance depends on your computer's memory. For optimal results, we recommend compressing 20-50 images at a time.

Do my images get uploaded to a server?▼

No. All image compression is performed entirely in your web browser using the Canvas API. Your images never leave your device, ensuring 100% privacy and security. This also means faster processing without upload wait times.

Can I set different quality levels for each image?▼

Currently, the batch compressor applies a single quality setting to all images in the queue. For individual quality control, use the single-image compressor. We recommend a quality setting of 0.7-0.85 for most web use cases.

What image formats are supported?▼

The batch compressor supports JPEG and PNG files. All images are converted to JPEG format upon compression for maximum compatibility and smaller file sizes. PNG images will be converted to JPEG as well.

Can I batch resize images for Xiaohongshu or Douyin?▼

Yes! Switch to "Resize + Compress" mode to batch resize all images to standard social media dimensions. Presets include Xiaohongshu 3:4 (1080×1350), Xiaohongshu 4:3 (1080×810), Douyin 9:16 (1080×1920), and Douyin 16:9 (1920×1080). You can also enter custom dimensions with optional aspect ratio lock.

How does the ZIP download work?▼

Once you've compressed all images in your queue, click "Download All as ZIP" to打包 all compressed images into a single ZIP file. Each file is renamed with "_compressed" suffix for easy identification.

ICompressImg

v1.3.1

This tool performs compression locally in your browser. Your images are not uploaded to any server.

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