Best image format for web (JPG vs PNG vs WebP vs AVIF)
Learn which image format to use for websites: JPG/JPEG, PNG, WebP, and AVIF. Compare quality, compression, and compatibility.
When you upload images to a website, the format you choose affects page speed, SEO, and how sharp your image looks. The best approach is to convert and compress based on the type of image: photos, UI screenshots, icons, or transparent graphics.
Use JPG/JPEG for photos. JPEG compression is great for gradients and camera images. If you need smaller files, convert JPG to WebP or AVIF and compare results at similar quality.
Use PNG for UI screenshots, logos, and transparency. PNG is lossless, so it preserves crisp edges and text. If your PNG is too large, consider converting PNG to WebP (lossy or lossless) depending on your needs.
Use WebP for modern web delivery. WebP often compresses images better than JPG at similar quality, and it can keep transparency like PNG. Converting PNG to WebP is one of the most common website optimizations.
Use AVIF when you want the smallest files. AVIF can deliver excellent compression for photos. Convert JPG to AVIF for modern browsers; keep JPG or PNG fallback if you need maximum compatibility.
FAQ
Which is better: WebP or AVIF?
AVIF often compresses smaller for photos, while WebP is very fast and widely supported. For best results, convert an image to both and compare file size at similar quality.
Is PNG always better quality than JPG?
PNG is lossless but can be huge for photos. JPEG is designed for photos and can look great at much smaller sizes. Choose based on image type and your compression needs.