Legacy ImageMagick Discussions Archive

Hi!

System: CentOC5, Win 2003, Magick 6.7.3-3

Very slow process PDF -> JPEG:
File size 3MB

use Image::Magick;          
$image = Image::Magick->new;
($width, $height, $size, $format) = $image->Ping("name.pdf");
print "$width, $height, $size, $format \n"; 
...
...
...

The process $image->Ping() takes about 50 seconds. The larger the file size, the longer the process.

But if the process BMP or etc-> JPEG, the process is instant!But as if a large file!

What's the problem?

PDF can not 'ping' as it has to be processed by a delegate (ghostscript) before IM understands it.

Ping is only possible with some image file formats. Generally those that are well defined and well known to IM, such that the basic information wanted is given in the immediate header, before the image data.

Ping that is normally only handles JPEG, PNG, PSD, GIF, BMP?

I found a normal solution is to make a quick preview of PDF
Need to request a single layer of PDF: name.pdf[0]

Code: Select all

use Image::Magick;         
$image = Image::Magick->new;
($width, $height, $size, $format) = $image->Ping("name.pdf[0]");
print "$width, $height, $size, $format \n";
...
...
...

P.S. for the administration:
I really like your software product.
I want to make a mirror on my server to download your software product.
As you look at it?

Legacy ImageMagick Discussions Archive

Very slow process PDF -> JPEG:

Very slow process PDF -> JPEG:

Re: Very slow process PDF -> JPEG:

Re: Very slow process PDF -> JPEG:

Re: Very slow process PDF -> JPEG: