thumbnail help -- poor quality =(

[Anon]

Hello. I'm posting again because the last question I posted didn't get any response.

Does anyone have a php script (that you know works?) that utilizes Imagemagick that creates thumbnails on the fly?

OR

has a php script that utilizes lib-gd that creates 'good' quality thumbnails?

Thanks so much. I hope someone can help me this time.

Mike

[alanzhao]

Hello:

GD doesn't create good quality image in JPEG format, but better in PNG format.

Alan

[c_note]

So are you saying to have the user upload jpg then convert to thumbnail PNG on the fly somehow?

How do I resolve the issue of creating good quality jpgs without using GD. Is there no way? I only know if using Imagemagick, thus I am asking if anyone has a working script that is known to work.

Anyone, please help. I'm fed up with this.

Thanks a lot.

Mike.

[Anon]

It's fairly simple..

<?
header("Content-type: image/jpeg");
passthru("/path/to/convert -geometry 100x100 /path/to/file.jpg -");
?>

you'll have to look at the imagemagick documentation for the options for -geometry (there are quite a few). The - at the end is in the place of the "output" file, and - just tells it to go to stdout (which passthru() displays to the user).

Simple, fast, and effective.

I store most images in a database, and I even put them in a temp file on disk, run the above script (basically) and then delete the file. For the quality, it's still faster than using GD (someone wrote a bicubic resize filter for GD which actually looks really good, but it's incredibly slow).

ImageMagick is being added to PECL (the c++ version of PEAR), but very few options have been added so far. You can see it at pear.php.net.

Hope this helps anyways.

[c_note]

Thanks.

I used the following script, but it doesn't seem to work:

http://www.snipe.net/geek/toolz/imagemagick.php?show_source=yes

Off the bat, do you see anything wrong with the script?

Thanks for you help.

Mike.