Rescales uploaded images via the ImageMagick+ utility "mogrify",
which is usually only available on UNIX systems. It should however
be fairly simple to make this plugin work with some other image
manipulation tool (at least with Linux).
prev << "feature/imgresize_gd"
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You cannot modify the README.plugins file, but anyhow any ideas or suggestion should as usually get filed on BugReports, UserSuggestions or even better the README.plugins.Discussion.