Image Size / ImageMagick / Photo Upload

[johnsmith153]

(1) What does this actually do? (compress it?)

 

$image = imagecreatefromjpeg("image.jpg");

header('Content-Type: image/jpeg');

imagejpeg($image);

 

By using this rather than displaying by using www.site.com/image.jpg it reduces file size of an image from 2.5mb to 0.5mb !!

 

(2) ImageMagick can't get these results. Am I doing something wrong? If I change the pixel size of an image in ImageMagick then I can reduce its file size, but (1) above reduces file size regardless of changing pixel size.

 

 

[PFMaBiSmAd]

From the documentation for the function you are using -

imagejpeg

...

quality

quality is optional, and ranges from 0 (worst quality, smaller file) to 100 (best quality, biggest file). The default is the default IJG quality value (about 75).