1Image::ExifTool::WritePUNsGe(r3)Contributed Perl DocumenItmaatgieo:n:ExifTool::WritePNG(3)
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NAME

6       Image::ExifTool::WritePNG.pl - Write PNG meta information
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SYNOPSIS

9       These routines are autoloaded by Image::ExifTool::PNG.
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DESCRIPTION

12       This file contains routines to write PNG metadata.
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NOTES

15       Compress::Zlib is required to write compressed text.
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17       Existing text tags are always rewritten in their original form (com‐
18       pressed zTXt, uncompressed tEXt or internation iTXt), so pre-existing
19       compressed information can only be modified if Compress::Zlib is avail‐
20       able.
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22       Newly created textual information is written in uncompressed tEXt form
23       by default, or as compressed zTXt if the Compress option is used and
24       Compress::Zlib is available (but only if the resulting compressed data
25       is smaller than the original text, which isn't always the case for
26       short text strings).
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AUTHOR

29       Copyright 2003-2007, Phil Harvey (phil at owl.phy.queensu.ca)
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31       This library is free software; you can redistribute it and/or modify it
32       under the same terms as Perl itself.
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SEE ALSO

35       Image::ExifTool::PNG(3pm), Image::ExifTool(3pm)
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39perl v5.8.8                       2007-09-12      Image::ExifTool::WritePNG(3)
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