html - How does Flickr prevent people from downloading images from the site? -

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Just wondering how does Flickr prevent people from downloading images from their site? What are they using?

Transparent on image .gif you still see the HTML source and find the actual URL of the image to find the actual image Can download.

For example, a random image: 

  & lt; Img style = "position: full; top: 0px; left: 0px; display: block" src = "http://l.imgg.com/g/images/spaceball.gif" alt = "" width = " 500 "height =" 366 "& gt;

This is a transparent image at the top. 

  & lt; Say flowers with flowers by img src = "http://farm5.static.flickr.com/4057/4300352607_edcc5a4a9eJpg" alt = "CIDO * (back in a few days)." Title = "" width = "500" height = "366" square = "reflect" & gt;

This is the real image, which is called spaceball.gif.


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