PHP - Detect if a PNG is fully transparent?

I am looking for a fast an reliable way of knowing if a PNG file hosted on an HTTP server is fully transparent (not ...

Draw Transparent Scaled PNG?

I have a large (300x300px) PNG image which I need to rescale. In an other SO question I read about StretchBlt and H...

Gradient overlay on transparent png?

On my website I have a PHP script that turns this image into a recolored version of the same image based on a $_GET ...

Cropping image by the center?

I have a PNG image of size 218, 178. I am using matplotlib's function imread to convert it into a ndarray. I would l...

Is it possible to turn a png into a layered PSD file??

I have a PNG image that I would like to turn into a layered PSD image. The image itself is mostly white space with s...