ConvertAndEdit

画像圧縮

画像ファイルサイズを削減

Compress Image

Reduce file size, maintain quality

90% Smaller
Smart

Professional Image Compression Tool

Reduce image file sizes by up to 90% while maintaining excellent visual quality. Our intelligent compression analyzes each image to apply optimal settings, perfect for web optimization, email attachments, or storage management. Whether compressing photos for faster website loading, preparing images for email, or managing storage space, achieve the perfect balance between file size and quality with advanced algorithms and precise control.

90%Smaller
BatchProcess
SmartQuality
FastSpeed

Compression Features

Advanced compression using multiple algorithms to achieve optimal file size reduction. Lossy compression for maximum size reduction (up to 90%), or lossless compression to maintain perfect quality. Intelligent analysis determines the best compression method for each image type and content.

Fine-tune compression levels from 1-100% quality with real-time preview. See exactly how compression affects your image before saving. Our algorithm maintains visual quality at lower file sizes by prioritizing important image areas and reducing data in less noticeable regions.

Compress hundreds of images simultaneously with consistent settings or smart auto-optimization for each file. Perfect for website optimization, email attachments, or storage management. Process entire folders while maintaining folder structure and naming conventions.

Each format uses optimal compression techniques: JPG with progressive encoding, PNG with palette reduction and filtering, WebP with superior algorithms. Automatic format recommendation based on image content ensures best quality-to-size ratio for photos, graphics, or mixed content.

Frequently Asked Questions

For JPG photos, 85-95% quality is virtually indistinguishable from the original while reducing file size by 50-70%. 70-85% quality works well for web use with minimal visible difference. PNG images can be losslessly compressed by 20-50% using optimization techniques. Always preview before finalizing.
Lossless compression reduces file size without any quality loss by removing redundant data - perfect for important images. Lossy compression achieves much smaller files by removing some image data that's less noticeable to the human eye. Use lossless for archives and lossy for web/sharing.
WebP offers the best compression (25-35% smaller than JPG) with excellent quality. JPG is best for photos with good compression. PNG compresses well for graphics with few colors. Modern formats like AVIF offer even better compression but have limited support.
Stripping metadata (EXIF data, color profiles, comments) can reduce file size by 10-20KB per image. Remove it for web use to save bandwidth and protect privacy (location data). Keep it for professional photography or when color accuracy is critical.
Most email providers limit attachments to 25MB total. Compress images to under 1MB each using 70-80% quality. Resize large images to 1920px width maximum. Consider using cloud links for many images. Our email preset automatically optimizes for common email limits.