Browse wiki
| Computer languages
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C +
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| Full description
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'Pngcheck' is the official PNG tester and … 'Pngcheck' is the official PNG tester and debugger. It verifies the integrity of PNG, JNG and MNG files by checking the internal 32-bit CRCs or checksums, and optionally dumps almost all of the chunk-level information in the image in human-readable form. For example, it can be used to print the basic stats about an image (dimensions, bit depth, etc.); to list the color and transparency info in its palette; or to extract the embedded text annotations. Originally designed simply to test the CRCs within a PNG image file (e.g., to check for ASCII rather than binary transfer), it has since been extended to check and optionally print almost all the information about a PNG image and to verify that the image conforms to the PNG specification. The program supports all PNG and JNG chunks, plus almost all MNG chunks (everything but PAST, DISC, tERm, DROP, DBYK, and ORDR).t PAST, DISC, tERm, DROP, DBYK, and ORDR).
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| Homepage URL
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http://www.libpng.org/pub/png/apps/pngcheck.html +
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| Interface
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command-line +
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| Is GNU
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false +
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| Keywords
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debugging +
, testing +
, checksum +
, PNG +
, CRC +
, pngcheck +
, jng +
, mng +
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| Last review by
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Janet Casey +
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| Last review date
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19 July 2005 +
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| License
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X11 +
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| License verified by
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Janet Casey +
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| License verified date
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29 July 2002 +
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| Name
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Pngcheck +
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| Prerequisite description
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zlib +
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| Prerequisite kind
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Weak prerequisite +
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| Real name
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Greg Roelofs +
, Alexander Lehmann +
, Andreas Dilger +
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| Related projects
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L2P +
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| Resource URL
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mailto:newt@pobox.com +
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| Resource audience
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Bug Tracking +
, Developer +
, Support +
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| Resource kind
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E-mail +
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| Revisionid
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2,557 +
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| Revisiontimestamp
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12 April 2011 08:21:11 +
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| Revisionuser
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User:WikiSysop +
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| Role
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Maintainer +
, Contributor +
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| Short description
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PNG integrity tester and dumper/debugger +
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| Software-development
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debugging +
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| Submitted by
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Database conversion +
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| Submitted date
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1 April 2011 +
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| Use
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software-development +
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| User level
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none +
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| Version comment
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2.0.0 stable released 2005-07-18
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| Version date
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18 July 2005 +
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| Version download
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http://prdownloads.sourceforge.net/png-mng/pngcheck-2.0.0.tar.gz?download +
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| Version identifier
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2.0.0 +
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| Version status
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stable +
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| Has queryThis property is a special property in this wiki.
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Pngcheck +
, Pngcheck +
, Pngcheck +
, Pngcheck +
, Pngcheck +
, Pngcheck +
, Pngcheck +
, Pngcheck +
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| Modification dateThis property is a special property in this wiki.
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5 March 2013 21:10:43 +
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| Page has default formThis property is a special property in this wiki.
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Entry +
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| Has subobjectThis property is a special property in this wiki.
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Pngcheck +
, Pngcheck +
, Pngcheck +
, Pngcheck +
, Pngcheck +
, Pngcheck +
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| EmailThis property is a special property in this wiki.
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newt@pobox.com +
, lehmann@usa.net +
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Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3 or
any later version published by the Free Software Foundation; with no
Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A
copy of the license is included in the page “GNU Free
Documentation License”.
The copyright and license notices on this page only apply to the
text on this page. Any software described in this text has its
own copyright notice and license, which can usually be found in
the distribution itself.
