Click to make picture open in blank window

Hi, just wondering how I could make it so that when I press a picture in my blog, it’ll appear in a blank window, the picture at full size and resolution.

I don’t necessarily want it to open in a new window, but maybe for it to just link directly.

Here’s my site in case you need it: https://www.flailingpillows.co.cc/ If you click any of the pics, you’ll see that it opens in another page of my own blog, which is not what I want–I want a blank page.