Choosing the right image format helps pages load faster without making images look poor. The best format depends on the image type and browser support you need.
JPEG
JPEG is still useful for photographs. It is widely supported and can be small when compressed carefully, but repeated editing and saving can reduce quality.
PNG
PNG is best for sharp graphics, screenshots, and images needing transparency. It is often too large for full photographic images.
WebP
WebP is a good default for many website images. It supports lossy and lossless compression and can handle transparency.
AVIF
AVIF can produce very small files with good quality, but encoding can be slower and workflows vary. Use fallbacks if your audience includes older browsers.
Do Not Forget Dimensions
Format helps, but oversized dimensions still hurt. Resize images to suit the layout and use responsive image sizes where your CMS supports them.
The best workflow is simple: upload sensible dimensions, compress images, and serve modern formats with fallbacks where needed.
