If you cannot view a WebP image on the web browser…
Most web browsers including Google Chrome allow you to view a WebP image, but there are still a few web browsers not compatible with the WebP format.
You cannot view a WebP image on Internet Explorer and the old version of Safari (iOS 13 or earlier) and Microsoft recommends you to use MS Edge instead of IE.
If you are using iOS 13 or earlier, update it with iOS 14 or later and you can view a WebP image on your iPhone too.
How can you view WebP?
Most major and recent web browsers allow you to view a WebP image.
If you are using Windows, you may use Honeyview. Honeyview is a free image viewer and allows you to view a WebP image too.