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Editorial Team
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Asked: 2026-06-03T20:48:12+00:00

I recently started using imagemagick with php and I’m relatively new with both of

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I recently started using imagemagick with php and
I’m relatively new with both of these, IM and PHP.
So, I’m here to ask for some help/suggestion(s).

First

If lets say a user uploads a gif or a png image on
my site and I want it converted to jpg, is there any
command like for example.$image->convert($file,'.jpg)
or the convert command is accesible only thru exec() ?
like for example exec(convert picture.png to picture.jpg)

Second

What if for again, the user uploads gif/png on the site
and I resize the image to a specified width/height and
write the image, with the writeImage function of IM like this:
$image->writeImage(basename.$ext) where $ext = jpg.
Will this work properly,is this a good practice? I assume this will
only rename it but still, I don’t see a problem in this… o.O

Oh sorry one more question, I’m not very familiar with exec,
is it better using imagemagick using exec(), does it improve
speed, load etc?

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1 Answer

  1. Editorial Team

    I can’t answer your questions directly but thought I point you to a few resources:

    Regarding which is better, exec or the PHP extension, I asked this same question a few months ago:

    Should I use a PHP extension for ImageMagick or just use PHP's Exec() function to run the terminal commands?

    For all Image Magick PHP functions you should look up the official guide:

    http://www.php.net/manual/en/book.imagick.php

    I switched from Image Magick to Graphics Magick as I heard it has better performance. It is a fork of Image Magick with an emphasis on performance. Large sites like Flickr and Etsy use it:

    http://www.graphicsmagick.org/

    This guide got me started:

    http://devzone.zend.com/1559/manipulating-images-with-php-and-graphicsmagick/

    And they have their own manual on php.net:

    http://php.net/manual/en/book.gmagick.php (most of the commands are identical to Image Magick’s)

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