PNGOUT videos and info

Diemazz

Streamium
Mount Nukabira
Name Taken
Lieutenant
Shimanoseki Station
Displacement lubricator
Yamagata, Nagano
William Schwartz
Der Spiegel
Han dynasty
La Neuville aux Bois
Edward V of England
William Chan
File:Borjigit 1 png
BIEL
getting there dvd
hairdresser supplies
Category:History of Peru
Guan Lu
Japanese human experimentation on the Chinese
Yan Pu
Wikipedia:Manual of Style (medicine related articles)
File:Sofa Camii Topkapi Istanbul 2007 jpg
Arclight (comics)
Roy Montrell
Bouligneux
Wikipedia:REDACT
Guwalgiya
Lufthansa CityLine
Varedo
Coleraine
Howie Meeker
File:Kit right arm redshoulders png
Lighttpd
Victoria Crosses
Irish mile
The City of Dreadful Night
Shellmound
Ayr, Ontario
Bob Younger
Xenosaga Episode III: Also sprach Zarathustra
Naijōshi Station

PNGOUT

Design by Ken Silverman

Developed by Ken Silverman

Latest release 20 November 2008; 49 days ago^[1]

OS Cross-platform

Type Image optimizer

License Proprietary

Website http://advsys.net/ken/utils.htm

PNGOUT is a freeware command line optimizer for PNG images written by Ken Silverman. The compression is lossless, meaning that the resulting image will have exactly the same appearance as the source image. According to its author, this program can often get higher compression than other optimizers by 5–10%.^[2]

PNGOUT is also available as a plug-in for the freeware image viewer IrfanView, and can be enabled as an option when saving files. It allows editing of various PNGOUT settings via a dialog box. However, IrfanView doesn't support transparency, so the image compression with IrfanView isn't guaranteed to be lossless. There is also a freeware GUI frontend to PNGOUT known as PNGGauntlet.

In 2006, a commercial GUI-driven version of PNGOUT, known as PNGOUTWin, was released by Ardfry Imaging, a small company Silverman co-founded in 2005.

1 Main operation
2 References
3 See also
4 External links

Main operation

PNGOUT is used mainly to reduce the size of image data contained in the IDAT chunk. This chunk is compressed using the DEFLATE algorithm. Deflate algorithms can vary in their speed and compression ratio. In general, it requires more processing time to achieve higher compression ratio. For PNGOUT, Ken Silverman wrote his own DEFLATE compressor which is slower than the ones used in most graphics software, but leads to smaller files. PNGOUT also performs automatic bit depth, color and palette reduction where appropriate.