GdPicture Imaging

[DevMarkus]

Hello,

I want to delete all tags from images.
I'm using Imaging1.TagDeleteAll(CurrentImage). Works great
But, if I have an JPEG and save the image with Imaging1.SaveAsJPEG(CurrentImage, "picname.jpg", 100) the image size is changing!
I doesn't mean small changes because removing the tags. Quite the contrary..some images are bigger then before
As example: I have a pic with size: 2.840 KB after removing all tags and saving the image, the size grows up to 3.966 KB !

How can I delete the tags without changing anything else?

thx

[Loïc]

Hi,

Unfortunately you can't do that with JPEG image. Because it is based in a lossy compression scheme (see: See: http://en.wikipedia.org/wiki/Lossy_compression) , you will always loose some data with successive Load/Save operations.

Maybe you can try to use the ExifTool free software from Phil Harvey. More info at http://www.sno.phy.queensu.ca/~phil/exiftool/

With best regards,

Loïc

[DevMarkus]

Hi,

Ok. I understood.

Thank you for these informations!