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As I searched for new links on QR Code I found that stackoverflow "generate" pages with strong keywords in the title. My original question is How to soften edges of an image programmatically with PHP? and the generated page from my question is qr code with soft edge.

How do they do that?

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closed as off topic by kiamlaluno, Manishearth, Martijn Pieters, Daniel Fischer, jonsca Jul 28 '12 at 3:46

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1 Answer 1

up vote 11 down vote accepted

Through the magic of human intervention: Your question title was edited by another user.

enter image description here

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