ftvs

Installation

Create a new bookmark and copy the code into the URL/address section, then save the bookmark. Enable your bookmarks bar and place the bookmarklet on the bookmarks bar for easy access if so desired.

javascript:var backup=document.body.onclick;void(document.body.onclick=function(event){var bodyStyle=window.getComputedStyle(document.body,null).getPropertyValue('background-image');var bgStyle=window.getComputedStyle(event.target,null).getPropertyValue('background-image');if(bgStyle!='none')window.open(bgStyle.replace(/url\("?/,'').replace(/"?\)$/,''));else if(bodyStyle!='none')window.open(bodyStyle.replace(/url\("?/,'').replace(/"?\)$/,''));document.body.onclick=backup;backup=undefined;});

Instructions

Click the bookmarklet then click the image desired. The new image should open in a new tab. Nothing will happen if no image is detected.

Problems

You may get the wrong image, in which case manual methods such as using a different browser (blasphemy)/viewing the HTML/CSS source will be required.

Devs

Script doesn't work on https://developer.mozilla.org/En header, but neither does Firefox's "View background image". Very strange. And there has to be a more elegant way to go about this.