Choosing the wrong image format wastes bandwidth and slows your site. Here's the definitive format guide for 2026.
JPG (JPEG) — Best for Photos
Lossy compression designed for photographic images with smooth color gradients. Typical quality 80–85 gives 50–70% size reduction vs raw. No transparency support. Every browser and app supports it.
Use for: Photos, product images, backgrounds, any image with many colors and smooth gradients.
PNG — Best for Graphics With Transparency
Lossless compression. File sizes larger than JPG for photos but better for graphics. Full transparency (alpha channel) support. Perfect for logos, icons, screenshots with text.
Use for: Logos, icons, UI elements, screenshots, anything needing transparency.
WebP — Best for Web (Use This)
Google's modern format. Lossy and lossless modes. 25–35% smaller than JPG at equivalent quality, 26% smaller than PNG. Transparency support (like PNG). Supported by all modern browsers.
Use for: Everything on the web where file size matters and you can control the browser environment.
SVG — Best for Icons and Logos
Vector format. Scales to any size without quality loss. Tiny file sizes for simple graphics. Can be styled with CSS and manipulated with JavaScript. No raster quality issues.
Use for: Logos, icons, illustrations with clean lines, charts.
AVIF — The Future (Partially Supported)
Next-generation format. 50% smaller than JPG. Excellent quality. Growing browser support but not universal yet. Use as a progressive enhancement with JPG fallback.
Quick Decision Tree
- Photo: WebP (with JPG fallback)
- Logo/icon: SVG
- Transparent graphic: WebP (PNG fallback)
- Compatibility-first: JPG for photos, PNG for graphics
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