attachment display settings for clickable images

I’m not too sure why you need to achieve this via the image properties. The destination of an linked image is something implemented by anchor tags, rather than anything related to the image.

Do you mean for text to display on the page? If you’re concerned about search engines and assistive technologies understanding the destination of the link; the alternative text is the link destination, i.e.:

<a href="...destination">
    <img alt="Name of page (rather than description of image)" src="..." />
</a>

Oh, you can upload an image to a sharing service like Imgur and then link it to us.

I think the ‘URL’ field is something specific to either your theme or a plugin you’re using. This is because the featured image is not always linked in every theme, so it wouldn’t make sense for it to be setting that was introduced (or taken away) in WordPress core.

To explore this, install “Health Check”: https://wordpress.org/plugins/health-check/
– And on the troubleshooting tab, you can click the button to disable all plugins and change the theme for you, while you’re still logged in, without affecting normal visitors to your site.

Any update on this? I also want to use the previously available “Attachment Display Settings” so that images do not pop up to full size when user clicks on them. It also makes an annoying red box appear when the mouse scrolls over an image. How can I achieve this without the “Attachment Display Settings”? Thanks.