使用PHP和ImageMagick将PDF转换为JPG

Question

I'm using a litte script to convert PDF to JPG. That works but the quality is very poor.

The script:

$im = new imagick( 'document.pdf[ 0]' ); 
$im->setImageColorspace(255); 
$im->setResolution(300, 300);
$im->setCompressionQuality(95); 
$im->setImageFormat('jpeg'); 
$im->writeImage('thumb.jpg'); 
$im->clear(); 
$im->destroy();

One more thing, I want to keep the original size of the PDF but the conversion crops the size of the JPG.

Answer 1

It can be done using setResolution, but you need to do it before loading an image. Try something like this:

// instantiate Imagick 
$im = new Imagick();

$im->setResolution(300,300);
$im->readimage('document.pdf[0]'); 
$im->setImageFormat('jpeg');    
$im->writeImage('thumb.jpg'); 
$im->clear(); 
$im->destroy();