AVIF (AV1 Image File, derived from the AV1 video codec ... kinds of programs they won't currently work with; you'll need to convert them into a different format if you want to share or use ...

The newer AVIF image format generally achieves even better ... There are a number of free conversion tools that can convert WebP files to JPG and the like without much effort.

WebP/Avif image converter' exists in Firefox and Chrome ... on the settings screen to set the image save destination and file name. It is also possible to automatically add the date and time ...