if i resize an image is there any possibility is there to loss any information in the original image?

if i use resize function to resize an image is there any possibility is there to loss any information in the original image?

Means i want to resize an image. But i dont want to loose any information in the image. help me plz

Answer 1

[David Sanchez]

Once you resize the image, obviously, you have to pay the price, and it comes to information. You'll be loosing pixels, since the resizing algorithm gets rid of some pixels to adjust the big picture to the new size. You can always make a copy of the original image for later use in case you need it.

[Shashank Rao]

sir then is there any other method to do thid with out loss. actually i want to do like this. i have some image in my system. i want to load it and i want to change its memory size to 100KB. If there is a big image it will be compressed, if small it will be enlaged. How to do this....