PNG - Ideas to Integrated Circuits

PNG-supporting Libraries and Toolkits
evidenced by "distance too far" errors in decoders based on zlib 1.2.1 and later, which do stricter
bounds-checking than older versions did. Note that, as of June 2006, the latest version of the
library [4.3] is actually on the author's source code page, not the main page listed above.)
● ImageMagick [John Cristy] (Unix, VMS, Win32, Macintosh) - version 3.6.3 and later; read/write;
full gamma support; full chromaticity support? broken support for sub-8-bit grayscale PNGs in
versions prior to 5.1.0; minimal MNG support as of version 3.9.2 and full MNG-LC support
(read/write) as of version 4.2.4 (broken in versions 5.2.7 through 5.3.6); JNG support as of
version 5.5.2; requires libpng and zlib; freeware with source. (See also Bob Friesenhahn's C++
interface to ImageMagick, Magick++.)
● ImageMan ActiveX Suite [Data Technologies] (Windows 3.x, Win32) - all versions? read/write.
(This is a set of Visual Basic and ActiveX controls/DLLs/whatever, for image manipulation and
conversion.)
● ImagePDF [Apex Internet Software] (Unix, Win32) - all versions; read-only; "retains most
relevant image tags," possibly including text annotations; commercial. (This is a command-line
program and shared library/DLL that converts images to Adobe's PDF format.)
● Imager [Arnar Mar Hrafnkelsson] (Perl) - version 0.05 and later; read/write; full alpha support
as of version 0.31; requires libpng and zlib; freeware (Artistic) with source. (This is a multiimage-format
Perl module written in C. Imager's feature set is similar to that of gd and its Perl
interfaces; it provides read/write support for several formats and supports image-blending,
gradients, fonts, and so forth.)
● Imagery [Ursus Computing] (Windows 3.x, Win32) - version 1.0 and later; read/write? (This was
an image-manipulation library with file support for PNG, JPEG, TIFF, etc.; various modification
tools [blur, edge-detect, contrast, resample, etc.]; and some demo apps, including a viewer. It is
now part of PiXCL Tools, below.)
● ImageScript [Jan Verhoeven] (Windows 9x/ME) - version 2 and later; read/write? freeware.
(This is a "tool to convert, resize, copy and move" various image formats, including PNG, "under
control of a script that you can create from, e.g., Delphi, VB, MS Access 97, etc.")
● ImageVision Library [Silicon Graphics] (IRIX) - version 3.0 and later; read/write? uses libpng
and zlib. (This is a multi-format image manipulation library, also known as "IL." It uses SGI's
Image Format Library to actually read and write image files; IFL is also available for
Windows 9x/NT. IL 3.1.1 apparently corresponds to IFL 1.1.1, etc.)
● ImageX [Fath Software] (Win32) - version 2.0 and later; read/write; commercial. (This is an
ActiveX control [OCX] for import, export, and conversion of various image formats. It can be
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