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Compress unlimited images at once.

The Bulk Image Compressor processes hundreds of images in parallel using all available CPU cores. Drop a folder of images and watch as every file is compressed simultaneously — 100 images take barely longer than 1.

Perfect for photographers, e-commerce managers, and web developers who need to optimize large image libraries. The ZIP download preserves your original folder structure, so organized directories stay organized.

Key features

• Unlimited images per batch, each up to 100 MB
• Parallel processing across all CPU cores
• Folder structure preserved in ZIP download
• Drag from multiple locations or use "Pick a folder"
• Real-time progress bar with bytes saved

How to bulk image compressor — step by step

1. Drop a folder: Drag an entire folder onto the upload area, or click "Pick a folder" to browse. The compressor recursively scans for all supported image formats.
2. Choose your settings: Set quality, output format, and resize options. All files in the batch share the same settings for consistent output.
3. Compress in parallel: The queue distributes files across Web Workers, saturating all CPU cores. A progress bar shows real-time status and bytes saved.
4. Download as ZIP: Save everything as a single ZIP archive with the original folder structure preserved. Individual downloads are also available.

Common use cases

Whether you are a photographer, web developer, e-commerce manager, or social media creator, optimizing images before publishing saves bandwidth, improves page load times, and ensures compatibility with platform-specific requirements. Our browser-based compressor works with all major image formats and processes everything locally for your browser with no uploads.

Need to convert images between formats? Try our Image Converter. To resize images for any platform, use the Image Resizer. For rotation and flipping, check the Image Rotator. To crop images with preset aspect ratios, use the Image Cropper.