How to properly validate PNG header in java?

I’m trying to write a function which will check if PNG file is not corrupted. Here I found a function, also provided below, which stores file bytes into its own byte array. I know that the first eight …

LIBGdx – I get gray pixels in a sprite when saving as PNG

I’ve been trying to scale down a sprite and save it to the android local store for later use, but everything I’ve tried always results in a grey edge around the sprite. Sprites As you can see, the …

PNGj: Row writing order

The purpose is to draw a small image inside another image at some specified area. Is there any possibility to change only specified rows and avoid rewriting of entire lines of the origin image? I …