Portable Network Graphics

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Portable Network Graphics

(file format)
/ping/ (PNG) An extensible file format for the lossless, portable, well-compressed storage of raster images. PNG provides a patent-free replacement for GIF and can also replace many common uses of TIFF. Indexed-colour, greyscale and truecolour images are supported, plus an optional alpha channel. Sample depths range from 1 to 16 bits.

PNG is designed for on-line viewing applications, such as the World Wide Web, so it is fully streamable with a progressive display option. PNG is robust, providing both full file integrity checking and simple detection of common transmission errors. Also, PNG can store gamma correction and chromaticity data for improved colour matching on heterogeneous platforms.

Filename extension: .png.

RFC 2083. W3C PNG pages. PNG home page.
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References in periodicals archive ?
Among its highlights, this book covers: JPEG Huffman coding, including decoding sequential mode JPEG images and creating sequential JPEG files; optimizing the DCT; portable Network Graphics (PNG) format, including decompressing PNG image data and creating PNG files; Windows BMP, XBM, and GIE Paperback with CD-ROM.
ATLANTA -- ISS X-Force Issues Advisories to Enterprises on Vulnerabilities Discovered in Microsoft's Portable Network Graphics Library and SMB Implementation
Ltd, which enables a more robust multimedia experience through the animation of portable network graphics (PNG) files.
A recent W3C study showed that when used in tandem, the W3C's innovations in CSS along with Portable Network Graphics (PNG) and HTTP/1.
0 dramatically improves Web graphics by taking advantage of the benefits of the Portable Network Graphics image format, which allows for faster, more colorful, and more dynamic images online.
has collaborated with the international marketing and communications firm of Siegel & Gale, a strategic technology partner, to create a Macintosh-suitable version of PNG Live(TM), a new plug-in incorporating the cutting edge imaging advantages of the Portable Network Graphics image standard, the company announced today.

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