PNG Site Map

The PNG web site is organized into four basic categories of information (colored headings below), not counting the separate MNG/JNG site (covering PNG's animated and lossy cousins). There are more than 100 PNG web pages and roughly 30 MNG pages, but with luck this page will help you make sense of it all. Feel free to contact Greg if you have trouble finding something, but please be sure to read the Introduction and FAQ pages first! (Greg's e-mail overfloweth, and he tends to ignore a lot of it these days...)

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PNG Home Page

A Basic Introduction to PNG Features (recommended for new visitors)

Current Status of PNG (recommended for new visitors)

• Status Snapshot of February 1999
• Status Snapshot of June 2000

Frequently Asked Questions (recommended for new visitors)

• Configuring IIS 4.0 for PNG

An Informal History of PNG

A More Detailed History of PNG

News (and more history) of the PNG Development Group

• 2024 · 2023 · 2022 · 2021 · 2019 · 2018 · 2017 · 2016 · 2015 · 2014 · 2013 · 2012 · 2011 · 2010 · 2009 · 2008 · 2007 · 2006 · 2005 · 2004 · 2003 · 2002 · 2001 · 2000 · 1999 · 1998 · 1997 · 1996 · 1995

Links to Other PNG Resources (includes mailing lists)

PNG Technical Documentation (various formats and mirror sites):

• PNG Specification and Extensions:
  • Joint W3C and ISO/IEC version -- main changes since 1.0:
    • clarified and expanded gamma-correction sections
    • sRGB chunk (standard RGB color space)
    • iCCP chunk (International Color Consortium profile)
    • sPLT chunk (suggested palette and histogram)
    • iTXt chunk (international/Unicode text)
  • PNG Extensions and Register of Public Chunks and Keywords
    • oFFs chunk (image offset from frame or page origin)
    • pCAL chunk (physical calibration of pixel values)
    • sCAL chunk (physical scale of image subject)
    • sTER chunk (stereographic subimage layout)
    • gIFg chunk (GIF Graphic Control Extension)
    • gIFx chunk (GIF Application Extension)
    • fRAc chunk (fractal image parameters)
  • Old versions:
    • Version 1.2 (includes Gamma Tutorial and Color Tutorial)
    • Version 1.1
    • Version 1.0
• zlib Technical Documentation
• MNG / JNG Technical Documentation

PNG: The Definitive Guide and Related Books

• Detailed table of contents
• Source code
• Errata list
• Random notes and timeline
• Complete text

Applications with PNG Support

• Browsers
• Image Viewers
• Image Editors
• Image Converters
• 3D Applications
• Games / Entertainment
• Office / Business Applications
• Scientific / Graphing Applications
• Miscellaneous Applications

PNG Support in VRML Browsers

• ImageTexture Examples on Opaque Materials:
  • Palette-Based Textures
  • 8-bps Grayscale and RGB Textures
  • 16-bps Grayscale and RGB Textures
• ImageTexture Examples on Partially Transparent Materials:
  • Palette-Based Textures
  • 8-bps Grayscale and RGB Textures
  • 16-bps Grayscale and RGB Textures
• PNG VRML Textures in 2D

Hardware with PNG Support

PNG Programming Information:

• PNG-supporting Libraries and Toolkits
  • libpng home page
  • zlib home page
  • libmng home page (also supports plain PNG)
• PNG Source Code
  • png2linuxlogo
  • pngcheck
  • pnggen
  • pngmeta
  • pngquant
  • pnmtopng
  • ptot (png2tiff)
  • rpng / rpng2 / wpng (pngbook demos)
  • tiff2png
• PNG Support in Mozilla (old)
  • Build notes (older)

PNG Images:

• Willem van Schaik's Test Suite of PNG Icons
  • ...without broken PNGs
• PNG VRML Texture Suite in 2D
• Ray-traced PNG Interlacing Demo (also JPEG version)
• Miscellaneous Transparent PNGs using IMG Tags
  • ...with a background image (fairly unreadable!)
• Miscellaneous Transparent PNGs using OBJECT Tags (also strict HTML 4.0 version)
  • ...with a background image (fairly unreadable!)
• Miscellaneous 32-bit RGBA PNGs
• Photographic PNGs with Alpha Transparency:
  • Icicles
  • Redbrush flower (Ohia Lehua)
  • Magnolia tree
  • Horned Owl
  
• Browser Gamma-Correction Consistency Test
  • Single-page Quick Test
  • Unlabelled GIFs on HTML Colors ("control group") or CSS colors
  • Unlabelled PNGs on HTML Colors or CSS colors
  • Gamma-labelled PNGs (1/1.6) on HTML colors or CSS colors
  • Gamma-labelled PNGs (1/2.2) on HTML colors or CSS colors
  • sRGB-labelled PNGs (1/2.2) on HTML colors or CSS colors
  • ICC-profile-labelled PNGs (1/1.0) on HTML colors or CSS colors
• Browser Color-Correction Test
• Netscape Navigator 4.x / PNG bKGD Test

Screenshots of Browsers and PNG Transparency, Gamma Correction, and Color Correction:

• Arena beta 3b for Linux (one of the first)
• CSCMail 1.7.8 for Linux (pretty good)
• Dillo 0.6.2 for Linux (pretty good)
• iCab 1.9 beta for Mac OS (pretty good)
• Internet Explorer 5.0 for Mac OS (pretty good)
• Internet Explorer 7.0b1 for Windows (pretty good)
• Konqueror 3.0 for Linux (getting there but needs work)
• Mozilla 2000-04-14 for Linux (at last!)
  • also using random-dithered binary transparency
• NetPositive 2.2 for BeOS (pretty good)
• OmniWeb 3.1rc2 for Mac OS X Server (pretty good)
• Opera 6.0b1/TP1 for Windows and Linux (pretty good)
• Oregano 2 for RISC OS (pretty good)
• WebTV (getting there but needs work)

Links to Other PNG Resources (includes pointers to more PNG images)

MNG / JNG Home Site

• An Informal History of MNG
• News (and more history) of the MNG developers
  • 2006 · 2005 · 2004 · 2003 · 2002 · 2001 · 2000 · 1999 · 1998 · 1997 · 1996
• MNG Technical Documentation (various formats and mirror sites)
  • MNG Specification 1.0 - includes subsets:
    • MNG-LC (low complexity)
    • MNG-VLC (very low complexity)
    • JNG (JPEG Network Graphics: JPEG images with PNG alpha-transparency)
• Applications with MNG Support
  • Browsers
  • Image Viewers
  • Image Editors
  • Image Converters
  • 3D Applications
  • Games / Entertainment
  • Office / Business Applications
  • Scientific / Graphing Applications
  • Miscellaneous Applications
• Hardware with MNG Support
• MNG-supporting Libraries and Toolkits
  • libmng home page
  • zlib home page
  • libjpeg home page
  • libpng home page (can be compiled with minimal MNG support)
  • lcms home page
• MNG and JNG Images
• Links to Other MNG Resources

libmng Home Site