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.

This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

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References in periodicals archive

Revealed in Google's February security update, the flaw leaves Android systems compromised with a modified Portable Network Graphics (PNG) that could trick users into viewing an infected image, Android Headlines reported on Saturday.

Google slammed for risking Android with infected PNG images

All screens are saved as .png files (Portable Network Graphics).

New Free Screen Capture Software

This software tool generates--in 5 minute intervals--HTML pages containing graphical PNG (Portable Network Graphics) images which provide a live, visual representation of monitored traffic.

Monitoring of networked machines and devices in manufacturing networks

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