It is using the Avif format (for images) for a 2x compression bonus over PNG while still maintaining a higher quality over JPG.
If you can't view the images then it means you are likely using an outdated browser, all current versions of browsers support it (afaik) except Internet Explorer.[0]
...And if you are using Internet Explorer, then god help you.
If you can't view the images then it means you are likely using an outdated browser, all current versions of browsers support it (afaik) except Internet Explorer.[0]
...And if you are using Internet Explorer, then god help you.
[0] https://caniuse.com/avif