Once again I am testing the Cloudinary Media Optimizer. I love it, but you can do a lot more with a Cloudinary URL.
I think it works best from Google's Cloud Storage and by itself, via a proxy to the media you already have for your site.
I also noticed you might get an error message if your media excedes 2 MB, well not so much an error message but a flat it won't work.

Below:
The standard fetch the image and process it for auto format and quality plus resolution match to the user's viewport size.

Like an animal I had to use the old fashioned Cloudinary URL for this test image.

https://res.cloudinary.com/paulportfolio/image/upload/f_auto,q_auto,w_800,c_scale/v1641590401/mountain.jpg