Preferred type is image/png

image/x-png

This mimetype is deprecated. You should still support it, but avoid using it to assign new mimetypes.
Instead, please use image/png

Portable Network Graphics (PNG) was devised starting in a discussion on newsgroup comp.graphics 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.

File types

.png

Also appears as

image/png
Preferred
image/vnd.mozilla.apng
Deprecated

Further reading

  1. Internet Assigned Numbers Authority (IANA)
  2. Let's Solve the File Format Problem!

Related to

No related mimetypes listed