Imported png image transparency problem

[rich2005]

    Just to my two euros worth.

Many of the "free" sites for PNG with transparency are not very free. It is possible to click on a Download button for the image and often give them "sign-up" details to get the image.

What you see on the site is a "preview" and a right click - download in your browser just downloads that preview, with fake transparency.  As well as the other methods, the checker pattern will erase, actual checker transparency does not.