Is ok @ajs , the expenditure is then too high for the programmer.I tried, in some pictures the alpha channel disappears. Others are transformed with errors. I do not really want to load this utility. I can add a call to an external handler, and then everyone will be able to write for themselves what is convenient and their settings. But I need to know for what types it needs to be done. And what parameters for the handler should be passed.
Like: bla-bla-bla\convert bla-bla-bla\clearart\music\abba.png -resize 50% bla-bla-bla\clearart\music\abba.png
Since each user must help themselves
расходы слишком высоки.
потому что каждый должен помочь себе