Software to pad jpeg files

Question

Is there any software to specify desired file size for the jpeg image, so it can pad bytes, in order to achieve desired size. So the original file size is smaller, I want to have exact size file, which is always bigger than the original.

Thx

Answer 1

Stenography methods increase file size.

http://lifehacker.com/230915/geek-to-live--hide-data-in-files-with-easy-steganography-tools

http://members.cox.net/ebmmd/stego/stego.html

Answer 2

How big do you want the file to be? You can add Exif metadata to the file with apps for that purpose, such as this one.

However, Exif metadata is restricted in size to 64 kB in JPEG images, so this method won't work unless the original image is more than 64 kB smaller than the desired size.