how is it possible to save my image, created with gd, as an png-8?
it saves as gif with transparent channel well – but I want to use png-8.
Best Regards, Beerweasle
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Answer
Using imagesavealpha()
and a transparent bg color should do the trick…
Based on dfilkovi’s code:
<?php // Create a new true color image $im = new imagecreatetruecolor(100, 100); // Fill with alpha background $alphabg = imagecolorallocatealpha($im, 0, 0, 0, 127); imagefill($im, 0, 0, $alphabg); // Convert to palette-based with no dithering and 255 colors with alpha imagetruecolortopalette($im, false, 255); imagesavealpha($im, true); // Save the image imagepng($im, './paletteimage.png'); imagedestroy($im); ?>