Template:External Image
Template for auto hyperlinking and resizing images using MediaWiki:Common.css to fit to users' screens.
UsageEdit
Just add the URL of an image after the |, like so: {{External Image|https://image.url/image.jpg}}
Adding a title is optional. To add a tile, insert Title=This is a title|
before the URL: {{External Image|Title=Image title|https://image.url/image.jpg}}