Image Formats: JPG vs PNG vs WebP vs AVIF
Choosing the right image format affects file size, quality, transparency support, and browser compatibility. This guide compares the most common formats and explains when to use each one.
Format Comparison
JPG (JPEG)
- ✅ Small file sizes
- ✅ Universal support
- ✅ Best for photos
- ❌ No transparency
- ❌ Quality loss on re-save
Best for: Photos, web images
PNG
- ✅ Lossless quality
- ✅ Full transparency
- ✅ No re-save loss
- ❌ Larger files
- ❌ No animation
Best for: Graphics, logos, screenshots
WebP Recommended
- ✅ 25-35% smaller than JPG
- ✅ Supports transparency
- ✅ Lossy and lossless modes
- ✅ All modern browsers
- ❌ Limited editing support
Best for: Web publishing, CDNs
AVIF
- ✅ Best compression
- ✅ HDR support
- ✅ Open format
- ❌ Slower encoding
- ❌ Growing browser support
Best for: Next-gen web, photography
When to Use Each Format
📸 Photographs for web
Use WebP for best compression. Fall back to JPG for older browser support.
🎨 Logos and graphics
Use PNG for transparency and crisp edges. SVG is better for scalable graphics.
📱 Social media
Use JPG for widest compatibility. Most platforms convert to their own format anyway.
🖥️ Screenshots
Use PNG for lossless quality. Text and UI elements need crisp rendering.
Convert Between Formats
Convert images between formats directly in your browser:
Frequently Asked Questions
What is the best image format for web?
WebP is the best format for web use. It provides 25-35% smaller files than JPG at similar quality and is supported by all modern browsers.
When should I use PNG instead of JPG?
Use PNG when you need transparency (alpha channel) or lossless quality. PNG is ideal for logos, graphics, and screenshots.
Is WebP better than JPG?
WebP typically produces 25-35% smaller files than JPG at similar quality levels. For web use, WebP is generally the better choice.