PNG stands for Portable Network Graphics.  It is a ''lossless'' image format, with very good compression.  It is also not burdened by any patents, unlike the [GIF] format.  PNG also supports fully 24-bit images, many levels of transparency, etc.

PNG is an official [W3C|http://www.w3.org] recommendation for Web graphics.

!Resources

* [PNG home page|http://www.libpng.org/pub/png/]