Portable Network Graphics (PNG) was devised starting in a discussion on newsgroup in 1995, with the first version of its specification released in 1996. The motivation for its creation was to create a free and unencumbered image format in the wake of the patent issue with GIF.

Used in file types
  • .png
This type may also appear as
  • image/x-png
  • image/vnd.mozilla.apng
Further reading
  1. Internet Assigned Numbers Authority (IANA)

  2. Let's Solve the File Format Problem!