A png24 file extension is related to the Portable Network Graphics file format. A png24 file contains picture image.
PNG24 file extension - Portable Network Graphics
What is png24 file? How to open png24 files?
File type specification:
The png24 file extension is associated with the Portable Network Graphics picture image file format similar to GIF, that uses image compression mainly for web purposes.
The png24 file stores PNG image in opaque 24-bit RGB format.