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Asked: 2026-05-10T20:27:28+00:00

Hey having some trouble trying to maintain transparency on a png when i create

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Hey having some trouble trying to maintain transparency on a png when i create a thumbnail from it, anyone any experience with this? any help would be great, here’s what i am currently doing:

$fileName= '../js/ajaxupload/tees/'.$fileName;  list($width, $height) = getimagesize($fileName);  $newwidth = 257; $newheight = 197;  $thumb = imagecreatetruecolor($newwidth, $newheight); imagealphablending($thumb, true); $source = imagecreatefrompng($fileName); imagealphablending($source, true);  imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);  imagesavealpha($thumb, true); imagepng($thumb,$newFilename);
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  1. I have had success doing it like this in the past:

    $thumb = imagecreatetruecolor($newwidth, $newheight); imagealphablending($thumb, false); imagesavealpha($thumb, true);    $source = imagecreatefrompng($fileName); imagealphablending($source, true);  imagecopyresampled($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);  imagepng($thumb,$newFilename);

    I found the output image quality much better using imagecopyresampled() than imagecopyresized()

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