With the recent release of operating system updates, you might see a message like this in Photos in macOS: The original image was captured in an unsupported image format. To view the full-resolution ...

AVIF (AV1 Image File, derived from the AV1 video codec) files are relatively new compared to more well-known types such as GIFs, JPEGs, or PNGs, but support for them has been steadily growing. Many of ...