Here is a simple example how to create a preview of PDF document's first page:
PHP:
The number between [] is the number of the page starting from 0.
Creating a PDF preview
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#1 by Gavin on July 12, 2009 - 4:15 pm
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Hello, thanks for all of your work on imagick and this great resource. I am trying to use a rework of you code sample for the conversion of pdf into tumbnails, I am having some problems with CMYK colour spaces converting to RGB, I was hoping someone might be able to see what is going wrong.
Initially I was not using profiles, and having implimented a very helpful code sample (evident in the following function) for CMYK to RGB conversion using ICC profiles, found as a comment on the php manual page for setImageColorSpace() I find that the conversion process now usually works.
Before implimenting the use of profiles CMYK pdf’s were genrated with negative colours, now I have a specifc pdf, with a full colour image in the front page, the pdf is an issue of PHP Architect so I cant really provide a link to it. However the front page (i.e with the full page image) always comes out black and white.
If you can see what I am doing wrong please shout at me
my code follows, many thanks:
//if thumb is set also creates a 150, 150 scaled thumb as name_tn.format
public static function CreateStockImage($file, $path, $name, $width, $height, $format, $thumb, $error)
{
try
{
$im = new Imagick($file.’[0]‘);
//check for cmyk profile – these make messy rgb jpegs and ver 2 browsers wont display cmyk, and why should they
if($im->getImageColorspace() == Imagick::COLORSPACE_CMYK)
{
$profiles = $im->getImageProfiles(‘*’, false); // get profiles
$has_icc_profile = (array_search(‘icc’, $profiles) !== false); // we’re interested if ICC profile(s) exist
if ($has_icc_profile === false)
{
// image does not have CMYK ICC profile, we add one
$icc_cmyk = file_get_contents(LIB_DIR.’/CMYKProfiles/USWebUncoated.icc’);
$im->profileImage(‘icc’, $icc_cmyk);
}
// Then we need to add RGB profile
$icc_rgb = file_get_contents(LIB_DIR.’/RGBProfiles/sRGB_v4_ICC_preference.icc’);
$im->profileImage(‘icc’, $icc_rgb);
$im->setImageColorSpace(Imagick::COLORSPACE_RGB);
}
$im->setImageFormat($format);
$im->thumbnailImage($width,$height,true);
$im->writeImage($path.”/$name.$format”);
if($thumb)
{
$im->thumbnailImage(150,150,true);
$im->writeImage($path.”/”.$name.”_tn.$format”);
}
$im->removeImage();
}
catch(Exception $ex)
{
$error = $ex->getMessage();
return false;
}
return true;
}
#2 by Aaron on July 15, 2009 - 8:09 am
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Hiya,
I am encountering the same error as Matt, except on a Windows machine. I’ve included the path to gs/bin/ in my Path, but I’m still getting the same error! Do I need to change the exe to gs.exe.? Right now it’s gswin32. Thanks in advance! Matt’s post is below:
I’m attempting to convert PDF files into PNGs. It works great from the command line (I do have Ghostscript 8.64 installed). But from PHP I’m having a problem:
code:
$im = new Imagick($pdf_file); // this is where it throws the exception below
output:
Fatal error: Uncaught exception ‘ImagickException’ with message ‘Postscript delegate failed `23_1235606503.pdf’: No such file or directory @ pdf.c/ReadPDFImage/612′ in get_thumbnail.php:93
Stack trace:
#0 get_thumbnail.php(93): Imagick->__construct(’…’)
blah blah
Any help will be greatly appreciated!!!!
#3 by Gavin on July 16, 2009 - 1:56 pm
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Hi Matt,
I had that same error, I looked all over for solutions and tried a couple, not sure which made it work.
On Windows 7 I installed Ghost Script after Image Magick, and saw your exact error, I read somewhere that Image Magick finds Ghost Script through the registry and not the environment, but perhaps that depends heavily on the permissions of the user. I added ghost scripts bin folder to the path variable, and also added a new system variable called gs with the path to ghost script bin. I then had to restart the system.
On win2k3 sp2 I installed Ghost Script before Image Magick, and added the Ghost Script to the path. I did not add a gs system variable, a restart was not required.
Hope that heps.
This is path from the win2k3 system, what OS are you using?
C:\ImageMagick;C:\SWSoft\Plesk\ADDITI~1\Perl\bin\;C:\SWSoft\Plesk\Mail Servers\Mail Enable\BIN;C:\SWSoft\Plesk\ADDITI~1\Perl\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;c:\Program Files\Microsoft SQL Server\80\Tools\Binn\;c:\Program Files\Microsoft SQL Server\90\Tools\binn\;C:\SWSoft\Plesk\Additional\PleskPHP5;C:\SWSoft\Plesk\MySQL\bin;C:\Program Files\gs\gs8.64\bin
#4 by Peavler on September 4, 2009 - 8:24 am
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I am really new to this and like your posts. Thanks.
#5 by Gavin on September 4, 2009 - 2:50 pm
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Hi,
I am using Imagcik to generate backgrounds of pdf pages, which then sit as a pdf background for a web based pdf editor. In most cases this works really well, however I have a couple fo queries that I hope someone can help me with.
As I undertstand it a PDF has no DPI, however for me to extract a perfect 1:1 scale pdf background image I have set the resolution to (100,100) before reading the pdf file. This seems like an unusual reselotion, can anyone explain why this works? Can anyone describe a better way of extracting a 1:1 background?
Most pdf’s process fines, however occasionally a pdf is pocessed that is smaller than A4 and becomes centred in the middle of a blank a4 page, I believe this is described in the Image Magick manual and is due to a crop box or trim box containg the pdf contents, using the command line this can be overcome using params : “-define pdf:use-cropbox=true or -define pdf:use-trimbox=true” is there anyway I can set these options for IMagick or am I now looking at exec’n the command line.
Thanks for your time
#6 by azazeljom on September 14, 2009 - 2:13 pm
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Hello,
I’m trying to convert an SVG image to PNG format an resize it, but Imagick add a white background image to my formated resized picture. Here is my code :
readImage(“images/toust.svg”);
$res = $test->getImageResolution();
$x_ratio = $res['x'] / $test->getImageWidth();
$y_ratio = $res['y'] / $test->getImageHeight();
$test->removeImage();
$test->setResolution(200 * $x_ratio, 200 * $y_ratio);
$test->readImage(“images/toust.svg”);
$test->setImageBackgroundColor(new ImagickPixel( “transparent” ));
$test->setImageFormat(“png24″);
$test->writeImage(‘images/plug.png’);
?>
How can i have a PNG image with transparent background ?
Thanks in advance
#7 by JohnofLong on September 24, 2009 - 12:57 am
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Hello All,
I was wondering if there was a way to generate a 2 page PDF with imagick. I am currently trying to avoid command line calls. I am using the imagick library in PHP.
Right now I just want to generate the 2 Page PDF on the fly. I do not want to store it as a file in a folder on the server.
Thanks!
John
#8 by Ian on November 12, 2009 - 12:06 pm
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Having the same problem as Matt and Gavin above (like Gavin I am on a Windows server – Windows Server 2003 x64 to be precise). ImageMagick and GhostScript are properly installed (IM static x64 and GS x64), when I run them from the command line, it functions perfectly for converting PDF to PNG! However, trying to get it to run through PHP is another story. ImageMagick is able to run and play with images while being called through PHP (ex: PNG to JPG), but when attempting to load PDFs it says that GhostScript kicks back “No such file or directory”.
I’ve made sure that the PATH is set correctly, and I’ve double checked user account privilages and permissions (I even gave access for the “everyone” to the PDF file).
I’ve even followed many suggestions and used PHP’s exec/system functions to make calls directly to the operating system, as well as the backtick ` operator – this doesn’t even report an error having happened. This is getting ridiculous!
#9 by Yougli on December 12, 2009 - 1:45 pm
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Hi,
I know this is not really related, but I’ve been looking everywhere for a solution, and this is the closest result I get…
Is there any way to build a multi-pages PDF using imagick?
I know how to build a single page PDF, but I can only resize the first page and it doesn’t automatically add new pages.
Thanks for your help
#10 by Mikko Koppanen on December 12, 2009 - 2:33 pm
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Yougli.
The process is the same as when creating gif animation. There is an example here.
#11 by Yougli on December 14, 2009 - 5:28 pm
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Yes, it’s working.
Thank you very much
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#12 by Adrian Jones on February 16, 2010 - 9:07 am
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For those not happy with the default quality of the PNG preview of the PDF, this will make a big difference. Note that you must set the resolution before reading the image:
$im = new imagick();
$im->setResolution(600,600);
$im->readImage($filepath);
$im->setImageFormat(“png”);
$im->setImageDepth(8);
$im->setImageCompressionQuality(90);
$im->scaleImage(500,0);
The only problem is the filesize ends up being very large, but text is actually readable, unlike imagemagick’s defaults.
#13 by ppva on April 5, 2010 - 12:30 pm
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A very basic question:
$im = new imagick( ‘test.pdf[0]‘ );
Could this work for a file on an other server, eg.
$im = new imagick( ‘http://www.otherserver.com/test.pdf[0]‘ );
or is imagick only designed to work for same-server files?
#14 by Mikko Koppanen on April 5, 2010 - 5:01 pm
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ppva,
the [] notation at end works only with local files.
#15 by ppva on April 6, 2010 - 10:18 am
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So how can I use a similar technique to get a preview of the 1st page of a pdf file that is on an other server?
Usually, doing things on files on an other server is well supported in the Internet. Examples of this are: hot linking to a jpg file, using the html5 video tag for a video on an other server, etc. So there must be a way for image previews for pdfs as well.
#16 by marek on May 9, 2010 - 6:10 pm
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pdf to png does not work for me
result:
Fatal error: Uncaught exception ‘ImagickException’ with message ‘Postscript delegate failed `/data03/………………: No such file or directory @ pdf.c/ReadPDFImage/630′ in /data03/…………………:3 Stack trace: #0 /data03/…………………..): Imagick->__construct(’2010_enesekaits…’) #1 {main} thrown in /data03/………………../magick.php on line 3
#17 by raffazizzi on May 15, 2010 - 6:07 pm
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Hi there, thanks very much for these very useful examples.
I’m converting to png and displaying a postscript file (ps). The file has more than one page (not unlikely a pdf).
If I load the images without [] it will always show the last page; instead if I put in any index number, it will always show the first page only. For example:
$im->readImage( ‘test.ps[2]‘ ); //shows the first page instead of the third
Any ideas of why this is happening?
Cheers,
R
#18 by andr on May 18, 2010 - 2:04 am
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I can make thumbnail from single pdf, but how to show thumbs from all pdf files in folder?
#19 by Stephan on June 22, 2010 - 12:39 pm
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How can you change the image size and quality?
#20 by RANA on August 10, 2010 - 3:42 pm
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How to resolve Fatal error: Class ‘imagick’ not found in C:\xampp\htdocs\pdf-thumb-preview.php on line 3 and WARNING: php_bin C:\xampp\php\php.exe appears to have a suffix php.exe, but con fig variable php_suffix does not match ERROR: The DSP imagick.dsp does not exist.
#21 by tahere on August 21, 2010 - 8:18 am
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vbn