PNG

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

A PNG image with an 8-bit transparency layer (top), overlayed onto a chequered background (bottom).

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

PNG (Portable Network Graphics) is a lossless bitmap image format. PNG was created to both improve upon and replace the GIF format with an image file format that does not require a patent license to use. PNG is officially pronounced as "ping" ( in IPA), but it is often just spelled out — possibly to avoid confusion with the internet tool ping. PNG is supported by the libpng reference library, a platform independent library that contains C functions for handling PNG images.

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

PNG files nearly always use the file extensions PNG and png and are assigned the MIME media type image/png (approved on October 14 1996).

~ ~ ~ ~ ~ ~ ~ ~ ~ ~

Lossless: REDIRECT Lossless data compression...

Bitmap: In computer graphics, a bitmap or pixmap is a type of memory organization or image file format used to store digital images. The term bitmap comes from the computer programming terminology, meaning just a map of bits, a spatially mapped array of bits. Now, along with pixmap, it commonly refers to th...

Image format: REDIRECT Image_file_formats...