JPG Image Compression

carlosruiz

Hi. I am trying to create or find a JPG image compression script using PHP. If it is possible. Some one can help me???

Thanks.

Carlos Ruiz.

jdorsch

You can use the GD image library functions

http://us2.php.net/manual/en/ref.image.php

If you need a pre-made script you should describe in more detail what you are looking for.

carlosruiz

Hi jdorsch. I am trying to do this:
Upload a JPG image.
Compressed the image and send it.
* Decompressed the image and see it.

Thanks.

Carlos Ruiz.

jdorsch

So you want a form to upload a jpg?
Do you mean compress it before it gets uploaded by the form, or when it gets uploaded it gets compressed and then e-mailed or something?
Do you mean after its sent or e-mailed decompress it? Or after it gets uploaded by the form just show it in a browser window?

carlosruiz

Hi Jdorsch.

I have the form to upload. The idea is to get the jpg picture, compressed it and upload it to the server root or directory of the server.
Then I have to see the image, so I have to decompressed it and show it in a browser window .

Thanks.

jdorsch

You can't have a form automatically compress something, and php can't compress it before its uploaded because PHP can't touch it until its uploaded to the server.

You can just write a plain old upload script. Just google for php file upload.

Weedpacket

If you're talking about file compression, then since JPEGs are already in a compressed format, compressing them again for upload is pointless. (Try it: take a JPEG image, compress it, then compare the size of the "compressed" file with the size of the original).

If you're talking about degrading the image quality so that the resulting JPEG file is smaller, then the GD functions already cited can do that on the server (they can't do anything on the client, because they and PHP don't run on the client).