Image Formats Guide — JPEG vs PNG vs WebP vs AVIF
A comprehensive comparison of image formats to help you choose the right one. Optimize and compress images with our Image Optimizer or convert between formats with the Image Converter.
Format Comparison Table
| Format | Compression | Transparency | Animation | Best For |
|---|---|---|---|---|
| JPEG (.jpg) | Lossy | No | No | Photographs, realistic images with many colors |
| PNG (.png) | Lossless | Yes | No | Graphics, screenshots, images with text |
| WebP (.webp) | Both | Yes | Yes | Modern web images, smaller files than JPEG/PNG |
| AVIF (.avif) | Both | Yes | Yes | Next-gen web, best compression-to-quality ratio |
| GIF (.gif) | Lossless | Yes (1-bit) | Yes | Simple animations, memes |
| SVG (.svg) | Vector (text) | Yes | Yes (CSS/JS) | Icons, logos, illustrations, responsive graphics |
| BMP (.bmp) | None | No | No | Legacy applications, uncompressed storage |
When to Use Each Format
JPEG — Photos & Complex Images
Use JPEG for photographs and images with many colors where a small file size matters more than perfect quality. JPEG compression is lossy, meaning some data is discarded to reduce file size. Adjust the quality setting (60-85%) to balance size and quality.
PNG — Graphics & Screenshots
Use PNG for images that need transparency, sharp text, or hard edges (screenshots, logos, diagrams). PNG uses lossless compression, preserving every pixel. File sizes are larger than JPEG for photos, but smaller for graphics with limited colors.
WebP — Modern Web Replacement
WebP is Google's format that provides both lossy and lossless compression with transparency and animation support. WebP files are typically 25-35% smaller than equivalent JPEGs and PNGs. Supported in all modern browsers — the default choice for web images.
AVIF — Next-Generation Format
AVIF offers the best compression-to-quality ratio, producing files 50% smaller than JPEG at the same quality. Supports HDR, wide color gamut, transparency, and animation. Browser support is growing — ideal for forward-looking web projects.
SVG — Icons & Vector Graphics
SVG is a vector format (not raster) that scales infinitely without losing quality. Use for icons, logos, illustrations, and any graphic that needs to look sharp at any size. SVG files are XML text files, making them small and compressible.
File Size Comparison (Same Image)
| Format | Estimated Size | vs JPEG | Quality |
|---|---|---|---|
| JPEG (80%) | 100 KB | — | Good |
| PNG-24 | 280 KB | 2.8× larger | Perfect |
| WebP (lossy 80%) | 72 KB | 28% smaller | Good |
| WebP (lossless) | 160 KB | 1.6× larger | Perfect |
| AVIF (lossy 80%) | 48 KB | 52% smaller | Good |
| GIF (256 colors) | 120 KB | 1.2× larger | Poor |
Quick Format Selection Guide
• Photographs → JPEG or WebP (lossy)
• Screenshots with text → PNG or WebP (lossless)
• Icons and logos → SVG (vector)
• Animations → WebP or GIF
• Need transparency → PNG, WebP, AVIF, or SVG
• Maximum quality, minimum size → AVIF
• Maximum browser compatibility → JPEG and PNG