Image Formats
PNG vs JPG vs WebP vs AVIF
If you publish artwork, screenshots, product shots, or UI assets, image format choice affects quality, transparency, loading speed, SEO, and storage costs. Here is the practical breakdown.
Quick answer
- PNG is best for transparent graphics, screenshots, and pixel-perfect assets.
- JPG is the old standard for photos, but usually not the best modern choice.
- WebP is the safest modern default for most websites.
- AVIF often gives the smallest files at high quality, especially for photography.
PNG
PNG uses lossless compression, so it preserves sharp edges, interface elements, typography, and transparency. That makes it a strong choice for logos, diagrams, design mockups, and screenshots.
The tradeoff is weight. PNG files become large very quickly for photos or textured artwork, which hurts performance and Core Web Vitals.
JPG
JPG is a lossy format designed for photographs. It remains universally supported and easy to work with, but it lacks transparency and usually produces larger files than WebP or AVIF at similar visual quality.
Use it when compatibility matters more than efficiency, or when you need the broadest legacy support possible.
WebP
WebP sits in the middle sweet spot. It supports lossy and lossless compression, transparency, and animation. For many teams, it is the easiest upgrade path from PNG and JPG because browser support is strong and file savings are real.
If you want one modern format that covers most use cases without a lot of edge-case drama, WebP is usually it.
AVIF
AVIF often delivers the best compression ratio of the four. That makes it attractive for portfolios, editorial pages, ecommerce photography, and any visual-heavy site chasing faster loads.
Its main downside is workflow friction. Encoding can be slower, and some pipelines still default to WebP because it is simpler to handle operationally.
Side-by-side comparison
| Format | Best for | Transparency | Compression |
|---|---|---|---|
| PNG | Screenshots, logos, UI | Yes | Lossless |
| JPG | Legacy photo delivery | No | Lossy |
| WebP | Modern all-purpose web images | Yes | Lossy + lossless |
| AVIF | High-efficiency image delivery | Yes | Lossy + lossless |
Which one should you choose?
- Choose PNG for crisp transparency and editing reliability.
- Choose JPG when you need maximum compatibility.
- Choose WebP as the default web-ready export for mixed content.
- Choose AVIF when performance matters most and your pipeline supports it well.
Relevant tools
- Image Converter for switching between common formats.
- Image Compressor for reducing file size before publishing.
- Image Format Comparison for 2026 for a deeper technical overview.