Hi.

You wrote about preloaders to load a website.
https://mdbootstrap.com/docs/jquery/components/spinners/

I try to use this feature to add loader to images in lighbox. When I click on thumbnail then large pic is open without loading. This is uncomfortable solution if user must wait without loader.

Do you have some ideas to load big images in lightbox with progress bar or loader?

I have the same problem with large images in Full Page Intro. It would be great to load those pictures with progress bar.