Legacy ImageMagick Discussions Archive

Hello people,

I need a help.
I'm using CentOS 6.4 with ImageMagick 6.5.4-7 Q16 and image module 2.2.2 with php 5.3.3 with Ghostscript 8.70-11.e16_2.6.

What is happening is the following. I want to convert a page of the PDF to PNG, only to be coming with bad quality! How can I fix this problem to come with perfect quality?

The code is:

<?
$im = new Imagick ();

$im->readImage ( 'file.pdf[0]' );

$im->setImageFormat('png');

header("Content-type: image/png");

echo $im;

?>

In command line mode, you would use "supersampling". That is set the density high before reading the image and then resize back down by the same factor. For example

convert -density 288 image.pdf[0] -resize 25% image.png

normal density is 72 dpi. so 4*72=288. Thus you must resize by 1/4=25%

Sorry I don't know the equivalent in Imagick.

Hi,
can you tell me is that you settle your problem, because I have the same concern that I convert a pdf image but unfortunately the image is not good quality.

thank you very much

See http://php.net/manual/en/imagick.setresolution.php