Question

I’m going to write a function for thumbnail creation.
I can use both Imagemagick & GD Library methods.
Which method creates better thumbnails and is faster and better for server (load, …)?

Thanks

Answer 1

$im = imagecreatefromjpeg('photo.jpg');

$ox = imagesx($im);
$oy = imagesy($im); 

$nx = 320;
$ny = 240;

$nm = imagecreatetruecolor($nx, $ny); 

imagecopyresized($nm,$im,0,0,0,0,$nx,$ny,$ox,$oy); 

imagejpeg($nm, 't_photo.jpg');

VS

exec('convert photo.jpg -resize 320x240 t_photo.jpg');

What do you think?

Also every good thumbnail should be sharpened a bit…

exec('convert photo.jpg -resize 320x240 -unsharp 1.5×1.0+1.5+0.02 t_photo.jpg');

http://net.tutsplus.com/tutorials/php/create-instagram-filters-with-php/