Free Format Comparison Tool

Analyze different image compression formats side by side. Test WebP, JPEG, PNG, and AVIF to find the optimal quality-to-size ratio for your needs.

Compare Your Image

Drag and drop an image here or click to browse

Supports JPG, PNG, WebP, AVIF, JXL • Max 10MB

Choose Image

Confidential Testing

All image processing and testing happen locally in your browser. Your images are never uploaded, ensuring complete privacy for sensitive visual assets.

How It Works

Upload Image

Select an image to analyze across different compression formats

Adjust Quality

Use the quality slider to test different compression levels

Analyze Results

View side-by-side analysis with file sizes and quality metrics

Key Features

Visual Analysis

Side-by-side viewing with synchronized zoom and pan controls

Size Analytics

Real-time file size analysis with percentage savings

4 Key Formats

Test JPEG, PNG, WebP, and AVIF in one place

Instant Results

See compression results immediately as you adjust settings

Detail Inspector

Zoom in to examine compression artifacts and quality variations

Quality Metrics

View SSIM scores and other quality measurements

Format Characteristics

Format	Compression	Browser Support	Best Use Case
JPEG	Good (lossy)	Universal	Photos, complex images
PNG	Fair (lossless)	Universal	Graphics, transparency
WebP	Excellent	Modern browsers	Web optimization
AVIF	Best	Latest browsers	Next-gen web

Who Uses This Tool?

Web Developers

•Choose optimal formats for web performance
•Balance quality vs file size for user experience
•Test fallback options for browser support

Digital Marketers

•Optimize images for email campaigns
•Find best formats for social media platforms
•Reduce load times while maintaining quality

Frequently Asked Questions

Which image format gives the best compression?

AVIF typically offers the best compression ratios, followed by WebP and JXL. However, the "best" format depends on your specific needs including browser support, image content, and quality requirements.

How do I choose between WebP and JPEG?

WebP typically provides 25-35% better compression than JPEG with similar quality. Use WebP for modern web applications, but provide JPEG fallbacks for older browsers. Our tool helps you visualize the exact differences.

What quality setting should I use?

For web images, 75-85% quality usually provides the best balance. For print or high-quality displays, use 90-95%. Our tool lets you test different quality levels to find your optimal setting.

Can I test custom compression settings?

Yes! Adjust the quality slider to test different compression levels across all formats simultaneously. You can also zoom in to inspect compression artifacts and quality variations in detail.

Which formats should I use for web?

For web use, we recommend WebP for modern browsers with JPEG fallback for older browsers. AVIF offers even better compression but has limited support. PNG is ideal for images requiring transparency or when lossless quality is essential.