PNG (Portable Network Graphics)

PNG is an extensible file format for raster image reversible, portable, and highly compressible storage. PNG provides an alternative means of not obtaining a patent alternative to GIF and can replace many of the common uses of TIFF. Support for optional alpha channel for index color, grayscale and true color image, and transparency. The sample depth range is 1 to 16 bits for each component (RGB maximum 48 bit image, RGBA maximum 64 bits).

The PNG specification was first published as a W3C Recommendation (press release) on October 1, 1996, and was updated to include the second edition of all errata on November 10, 2003. This version is also ISO standard, ISO / IEC 15948: 2003 (E).

This means that it is a mature document that is thought to help maximize the potential of the Web. The PNG viewer can be used on many platforms; more content creation tools are available; modern browsers also support it.

The official PNG homepage is managed by Greg Roelofs and includes a frequently updated list of web browsers that support PNG (including plug-ins), help applications, and content creation tools (interactive editors and conversion tools) .

If you do not know the actual meaning of the actual gamma and chrominance functions, please check this note to see how it can help improve cross-platform graphics. PNG also employs a new interlaced scanning scheme that provides faster available graphics, and by including metadata in the file, the search engine can find the graphic based on the description rather than the file name I will.

PNG, a portable network graphics, offers a wide range of attractive features including "full color depth, support for complex image transparency, better interlaced scanning, and automatic correction of display gamma". PNG images can also store image content. A short text description that allows the Internet search engine to retrieve images based on these embedded text descriptions. "There are two PNG formats, PNG - 8 and PNG - 24. The PNG - 8 format is similar to GIF, but it can hold up to 256 colors. The PNG - 24 format can display millions of colors But the file size will also increase.The rule of thumb here is to choose the proper color and file size balance format for your specific needs.

PNG stands for Portable Network Graphics. It is a new image format than JPEG or GIF. Part of the PNG design is designed to replace GIF, so there are new features. There are two kinds of PNG image format. PNG-8 supports up to 256 colors, PNG-24 can accommodate up to 16.8 million colors, PNG-32 can handle up to 16.8 million colors, and has high transparency. PNG supports transparency like GIF. In other words, you can make the selected image area (or the whole image) transparent. Furthermore, in PNG it is possible to specify the transparency ratio (so-called alpha synthesis). This means that you can control the level at which the background image is displayed. You can combine PNG images with backgrounds in a way superior to GIF. It is easy to see by placing circular or irregularly shaped images on top of another image.

So, what is PNG, and why is it worth having a home website? PNG (pronounced "ping") is a portable network graphic format used to store bitmap (raster) image formats on a computer. Informal abbreviation stands for "PNG is not GIF". On January 1995, Unisys' LZW compression scheme got a patent for GIF, so Unisys and CompuServe suddenly announced royalties for the implementation of the GIF program. As GIF has shown the times in various ways so far, this announcement will only promote the development of new and greatly improved alternative formats. The result is PNG