AVIF images are bigger than JPG and WebP

I’m trying to use AVIF images. I’ve used phpinfo.php and can see that AVIF is enabled on the server

The server is creating AVIF images. Here’s the info about one of the images I’ve downloaded from the site:

But the AVIF images are bigger file sizes than the same dimensions and quality JPG and WebP images.

Any ideas why?

setting the same quality level (like 82) for all formats will yield to different filesizes AND different visual quality. I found this article interesting to better understand and see how each format behaves (visually) given a certain quality setting.

TL;DR; Visually similar results from different quality settings

JPEG quality 50 60 70 80
AVIF quality 48 51 56 64
WebP quality 55 64 72 82
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Hey, thanks I’ll take a look.

I’m still surprised that an 80% quality JPEG is smaller than an 80% quality AVIF – I wasn’t expecting that.