Image::ExifTool::WritePNG3pm
Write png meta information
Usage
These routines are autoloaded by Image::ExifTool::PNG.
Overview
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 international 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).
Releases
11 releases since Debian 4.0 (Etch); the text changed 10 times.