1.1.1: 2024-02-14

  • Improve documentation of SNG syntax.

  • Drop autoconfig, apply cppcheck validation

1.1.0: 2015-01-12

  • Compatible with libpng 1.2.x and newer (tested with 1.2.50, 1.4.12, 1.5.17 and 1.6.3)

  • Fix locating X color database on Mac OS X

  • Fix sCAL handling (converting sng to png incorrectly swapped width and height)

  • Fix several bugs in base64 handling, and clarify that it differs from RFC2045

  • Fix dumping and validation of sRGB intent value.

  • Fix handling of iTXt when 'translated' contained non-latin-1 data (it can contain arbitrary UTF-8 data)

  • Fix support for long text blocks

  • Fix validation of iTXt blocks

  • Fix failure when multiple sng files where given on command line.

1.0.6: 2014-06-04

  • Forward-ported to libpng 1.4.

  • Width and height fields were reversed in sCAL chunk.

1.0.5: 2010-11-22

  • Finds newer locations of the rgb.txt file.

  • Adapted for altered extension handling in recent libpng versions.

1.0.4: 2005-06-21
1.0.3: 2003-12-29

  • RPM packaging fixes.

1.0.2: 2002-09-18

  • Changed the signature function for libpng in Configure.in.

  • Fix for handling of private and gifx chunks.

1.0.1: 2002-07-30

  • Lift documentation to XML-DocBook

1.0.0: 2001-07-07

  • gcc -Wall cleanup for production release.

  • John Zaitseff’s patch to fix bugs with decompilation of 8-bit chars.

0.9.4: 2001-02-28

  • Fixed an off-by-one allocation error that caused occasional SEGVs. Thanks to Eduardo Santiago <santiago@ascend.com> for reporting the bug and sending a patch.

0.9.3: 2000-12-28

  • Forward port to 1.0.8/1.0.9.

  • Added -V option.

0.9.2: 2000-02-06

  • Forward port to use 1.1.0 API if it’s available.

0.9.1: 2000-01-10

  • IMAGE chunk syntax changed; added write transformations.

0.9.0: 1999-12-28

  • Public alpha release. See TODO for known problems.

  • Configuration now handled with automake/autoconf.

  • Syntax cleanup. String-pasting now supported.

0.2: 1999-12-23

  • autoconf build

  • Fixes for obscure chunks

0.1: 1999-12-22

  • Pre-alpha private release; passes the regression test.