AVIF Converter
Convert to AVIF for the smallest possible file size
AVIF often beats WebP by another 20-30% on photographic images, at the cost of slightly longer encode time — worth it for hero images and galleries where every kilobyte matters.
Drop your images here
Upload JPG, JPEG, PNG, WebP, AVIF, HEIC, or TIFF images.
AVIF is currently the most efficient widely-supported image format on the web. For photographic content especially, it can produce noticeably smaller files than WebP at the same visual quality, which is why it's the top recommendation for photo-heavy pages where load time directly affects bounce rate and conversion.
The tradeoff is encode time (AVIF compression is more computationally expensive than JPG or WebP) and slightly less universal support in older image-editing software — but every current browser renders it natively. This converter handles the encoding server-side, so there's no local performance cost to you, and quality is chosen per image rather than a single blanket setting.
Frequently asked questions
When should I use AVIF instead of WebP?
For photographic images where minimizing file size matters most — hero banners, galleries, blog headers — AVIF usually wins. For graphics with flat colors or where broader tool compatibility matters, WebP or PNG can be the safer choice.
Is AVIF supported by all browsers?
All current major browsers support AVIF. If you need to support very old browser versions, Smart Optimize will recommend WebP or JPG instead where appropriate.
Does AVIF support transparency?
Yes, AVIF supports an alpha channel, so images with transparency convert without any added background.