From 115MB to 60.3MB

From 115MB to 66.4MB

From 115MB to 78.6MB

From 115MB to 93.6MB

With this the default image type preference is updated

Now converting webp images to png instead of webp to jpg because converted jpg images were full of artifacts.

All images are not optimized, sorted, and stored in a single media folder.

Just playing around.

Updated as per new instructions added to rst cheat sheet.

This sections provides good reference on how to add a YouTube video correctly to both HTML and PDF versions of docs.