# AVIF support + IPTC Passthrough

[date: 2022-01-27T11:20:32.554+01:00]

AVIF is now the default format across all accounts if you use `auto=format`. AVIF format can also be forced as the output format with `fm=avif`. File sizes should drop by nearly 60% compared to JPEG & 35% compared to WebP, so that's awesome news for every project.

We've also made available the [`iptc=allow`](https://docs.imgix.com/apis/rendering/format/iptc) parameter to allow IPTC metadata (which contain attribution info) to pass through from the original JPG image to the transformed image.