How to convert gif to jpg

Posted on 2006-11-04
Last Modified: 2008-02-01

I upload gifs which I want to convert and save as jpgs. I do this:

$image = @imagecreatefromgif($filename);
  $image_p = imagecreatetruecolor($new_width, $new_height);
  imagecopyresampled($image_p, $image, 0, 0, 0, 0, $new_width, $new_height, $width, $height);
  imagejpeg($image_p, $filename_tn, 100); // 100% quality

Will that do the job, or is something else needed?

Question by:tr5
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LVL 35

Accepted Solution

Raynard7 earned 500 total points
ID: 17875659
Hi,  that should be sufficient

the colour looks right, the conversion looks right and saving the jpeg looks right.

The only thing I would consider is if you are uploading these to be converted - why not convert the $_FILE to a jpeg on the fly rather than saving the gif to file and then re sampling it?

Author Comment

ID: 17875689
How would I do that?
LVL 35

Expert Comment

ID: 17875694
well - you have $image

= imagecreatefromgif($filename)

you should just be able to point it to the uploaded file

= imagecreatefromgif($_FILE['uploadedFileName']);

and the rest of the script would remain the same

Author Comment

ID: 17875710
ok. Thanks.

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