What AVIF means
AVIF can produce very small files, which helps image-heavy sites load faster. Encoding takes more processing, and support in some tools is still catching up. Many sites serve AVIF where supported and fall back to WebP or JPEG.
Why it matters for your website
Images are often the heaviest part of a page, and heavy pages load slowly on phones. Smaller image files mean faster loads, which keeps visitors around and supports good Core Web Vitals. For photo-heavy sites like restaurants, real estate or ecommerce, the savings add up quickly.
Example
A real estate agent's listing pages serve AVIF photos to browsers that support them and fall back to WebP or JPEG for others. The galleries load noticeably faster on mobile.
Tips
- Let your CMS, CDN or image plugin convert and serve AVIF automatically where possible.
- Keep a fallback format for browsers or tools that do not support AVIF.
- Compare quality settings by eye, since very low settings can blur fine details.
Common mistakes
- Converting images to AVIF but still uploading huge original dimensions.
- Removing fallbacks and breaking images in email tools or older apps.
Questions about AVIF
What is AVIF?
A newer image format that often compresses even smaller than WebP at similar quality.
Is AVIF better than WebP?
AVIF often makes smaller files at similar quality, but encoding takes longer and tool support is less universal. Many sites use both, serving AVIF first and WebP or JPEG as backups.
Do all browsers support AVIF?
Current versions of the major browsers support it, but some older browsers and software do not. Serving a fallback format covers those cases.
