Best Image Formats for the Web in 2026
There's no single best image format — the right choice depends on what you're showing. Here's the practical decision guide for photos, logos, screenshots, and graphics in 2026.
Photographs: WebP or AVIF
WebP is the safe default for photos in every browser. AVIF is up to 30% smaller if you want maximum performance and can set up a fallback. Both beat JPEG on size with equal quality.
Logos, icons, and graphics: SVG or PNG
Vector artwork belongs in SVG — it scales to any size and is tiny. If you need a raster (for example, a logo inside a screenshot), use PNG for sharp edges or WebP for smaller files.
Screenshots and text-heavy images: PNG or WebP lossless
Screenshots have sharp text and flat areas where JPEG artifacts show. Use lossless PNG or lossless WebP to keep them crisp. Lossless WebP is usually smaller than PNG.
What to avoid
Avoid JPEG for anything with text or transparency. Avoid BMP (huge, uncompressed) and GIF for photos (limited colors). Convert legacy formats instead of shipping them.
In short: WebP for almost everything, AVIF for photos when you want the smallest files, SVG for vector graphics, PNG for lossless needs. If your images are still in JPEG or PNG, converting to WebP is the fastest win available.