Sending an exact copy of the original with ImageJPEG... ?

[Jimmy79]

I'm sending pictures with PHP and everything seems to work fine.

However: in IE, I right click on the "outputed" image on my site and choose SAVE-AS, and inspect the file that IE creates and notice that it's 923kb large, whereas the original on my server stands at a much smaller 436kb.

Doing this...

$dest = ImageCreateFromJPEG($img_file); # my 436kb pic
ImageJPEG($dest,"", "100");

...converts a 436kb pic to a 923kb one.

Now it might be simpler to just put <img src="pic.jpg"> but the PHP script that handles the image generation does so as per the user's requests (like 50% smaller, etc) and would be nice if it could properly handle a request for the original picture as-is as well.

Any ideas?

Jim

[drew010]

I think the problem that makes the filesize larger is that you are setting quality to 100. try making the call like:

$dest = imagecreatefromjpeg($img_file); # my 436kb pic
imagejpeg($dest);

[Jimmy79]

Giving no quality parameter yields a filesize of 170k. I've verified in the manual, and omitting the parameter is as good as putting in "75%".

I'd wager the 100 is necessary. I want to resend the picture as-is.

Jim 😕

[drew010]

maybe then you will have to set the optional parameter quality to whatever the real jpg image was encoded with,, sounds like you will have to guess but it seems about 90 is good.