Here's the workaround:

Images are uploaded to the server as full-size. Resizing happens in Javascript, at the browser end, when rendering the page. The fullsize image is downloaded to the browser *before* rendering.

So, one of the two following works, depending on your browser:

• Open the image in a new tab; or

• Turn off Javascript for 68kmla.org (using NoScript in Firefox, for example), *then* open the image in a new tab.