Image dimensions are not set

[nicbou]

Description

When inserting an image with Redactor, the image does not have width and height attributes. Those are important to prevent the content from jumping around while it loads, especially with lazyloaded images.

Steps to reproduce

1. Insert an image
2. It does not have width and height attributes

[andris-sevcenko]

Is this when selecting a Craft asset?

For regular images, this could be pulled off, but if the user selects a transform, the width and height are unknown until the transform is actually created.

[nicbou]

I usually insert images as transforms, using the rich text editor's interface.

[andris-sevcenko]

@nicbou yeah, that'll be a bit problematic, because the final image size will only be known only when the transform is generated, which most of the time won't be when you are selecting that image from the modal.

I get the niceties this would offer, but I can't see how it can be pulled off with a reasonable effort.