title: How to replace .PNGs inside a file with Hex?
body: <p>I'm kinda new to messing with hex and I'm trying to replace a .PNG inside a file with HxD and I get a "This operation changes the file-size." error. The file I'm replacing it with is definitely smaller so it shouldn't be an issue (right?) but when viewing the PNG hex it has a much larger length than the file I'm trying to replace. I've looked around for help but can't seem to find anything so would be awesome if someone could point me in the right direction, thanks in advance.</p>