Hi,
I have a transparent png format image.But SAP system does not support PNG format.So I want to convert it to either GIF or JPEG. I tried to convert it using Adobe Photoshop and some other tools but the resulted image loses its transparency. Can any body please tell me solution ??? Here is my image
yes you can convert png to either GIF or JPEG without losing transparency....... this is done though the help of php lang...
<?php
$src = imagecreatefrompng("original_image.png");
$newImg = imagecreatetruecolor($nWidth, $nHeight);
imagealphablending($newImg, false);
imagesavealpha($newImg,true);
$transparent = imagecolorallocatealpha($newImg, 255, 255, 255, 127);
imagefilledrectangle($newImg, 0, 0, $nWidth, $nHeight, $transparent);
imagecopyresampled($newImg, $im, 0, 0, 0, 0, $nWidth, $nHeight,
$imgInfo[0], $imgInfo[1]);
imagejpeg($newImg,"jpec_test_1.JPG",100);
imagedestroy($src);
imagedestroy($newImg);
?>
You can't convert to JPEG as it does not support transparency. You should be able to conver to a GIF, just make sure to check the box next to transparency. However, the image you linked to actually does not appear to have transparency. Luckily, the image is a very simple gradient and you can easily reproduce this in Photoshop and then save it out as a GIF w/ transparency.
Even if I didn't quickly succeed to accomplish that with the Gimp, I've found a site which suits your needs. It is a online tool: you haven't to download anything, just upload your png image and then download the generated gif. Try it:
http://images.my-addr.com/converter_png_to_gif_online_freeware_tool.php
Hope it helps.
As noted by @Valjas, you JPEG doesn't support transparency. If you are converting just for reducing file size as JPEG has better compression, you might want to use https://tinypng.com/. It also has an API. I just used it for reducing file size of few PNGs.
BTW, I found this information while I was chasing the same problem ;)
