Image::ExifTool::WritePNG(3pm) User Contributed Perl Documentation Image::ExifTool::WritePNG(3pm)
NAME
Image::ExifTool::WritePNG.pl - Write PNG meta information
SYNOPSIS
These routines are autoloaded by Image::ExifTool::PNG.
DESCRIPTION
This file contains routines to write PNG metadata.
NOTES
Compress::Zlib is required to write compressed text.
Existing text tags are always rewritten in their original form (compressed zTXt,
uncompressed tEXt or internation iTXt), so pre-existing compressed information can only be
modified if Compress::Zlib is available.
Newly created textual information is written in uncompressed tEXt form by default, or as
compressed zTXt if the Compress option is used and Compress::Zlib is available (but only
if the resulting compressed data is smaller than the original text, which isn't always the
case for short text strings).
AUTHOR
Copyright 2003-2008, Phil Harvey (phil at owl.phy.queensu.ca)
This library is free software; you can redistribute it and/or modify it under the same
terms as Perl itself.
SEE ALSO
Image::ExifTool::PNG(3pm), Image::ExifTool(3pm)
perl v5.10.0 2008-01-02 Image::ExifTool::WritePNG(3pm)
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