jpeg - Transparent jpg image. HOW? -

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i came across image

http://images.clipartpanda.com/clipart-house-house-clip-art-87.jpg

and looks transparent .jpg image

as far know there no transparency in jpg images

how can done?

it cannot done. jpg image in fact png. named jpg, server says mime type image/png. mime type wins on file extension in browsers. browser tries determine file type file extension if mime type missing - if there type, file assumed of type, regardless of extension; may have no extension @ all.


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