Imagick. Image quality when converting?

Question

PHP

To create previews for pdf documents, I use the construction of the form

$img=new Imagick($this-&gt;tempNum.'.pdf[0]');<br/>
$img-&gt;setImageFormat('jpeg');<br/>
$img-&gt;writeImage($this-&gt;tempNum.'.jpg');<br/>

But the quality of the resulting image, unfortunately, is quite low ...
Are there any ways to improve it?

Answer 1

php.net/manual/en/function.imagick-setcompressionquality.php