Quality Resizing Using GD

[Shawazi]

I have images being resized with code like this:

//$target_id and $thumblink set elsewhere

$quality = 100;
imagejpeg($target_id,$thumblink, $quality);

It appears that even with the top quality, they are slightly blurred. It's especially noticeable within font/type inside the image. Is there any way around this? Maybe a GD setting?

[NogDog]

One thing is to make sure you use [man]imagecreatetruecolor/man to create the target image, and you probably should use [man]imagecopyresampled[/man] to do the resizing. Also, outputting as a PNG image ([man]imagepng/man) might be a bit sharper, though the image file size will be larger.

[Shawazi]

I am using those functions in this way:

//$dest_x and $dest_y relate to the new dimensions
//$size[0] and $size[1] are the original dimensions

$target_id = imagecreatetruecolor($dest_x, $dest_y);
$target_pic = imagecopyresampled($target_id,$source_id_original, 0, 0, 0, 0, $dest_x, $dest_y, $size[0],$size[1]);
$thumblink = $thumb_dir.$prefix.$name;
if (ereg("\.gif$", $name))
{
	$source_id = imagegif($target_id,$thumblink, $quality);
	$source_id_original = imagecreatefromgif($thumblink);
}
if (ereg("\.jpg$", $main) or ereg("\.jpeg$", $main)) 
{
	$source_id = imagejpeg($target_id,$thumblink, $quality);
	$source_id_original = imagecreatefromjpeg($thumblink);
}
if (ereg("\.png$", $name))
{
	$source_id = imagepng($target_id,$thumblink, $quality);
	$source_id_original = imagecreatefrompng($thumblink);
}