Is there a way to serve both images in such a way that if a visitor is using Safari browser (which cannot see .webp) they will see an alternative image?
I tried to experiment with this, but it fails:
<source srcset="/images/index.webp" type="image/webp">
<source srcset="/images/index.jpg" type="image/jpeg">
<img src="/images/index.webp" alt="Climb Kilimanjaro">