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Manual Reference Pages  -  IMAGE::EXIFTOOL::WRITEPNG (3)

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NAME

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

CONTENTS

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 2003-2016, 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)
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perl v5.20.3 IMAGE::EXIFTOOL::WRITEPNG (3) 2016-01-04

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