What I need: I need the smallest file size, regardless of format. So you could use concurrency multi-core processing, which BTW you don't use for any conversion: single or batch, I highly recommend it. Sometimes I need to test 3-4 formats at once, and each format sometimes makes bigger files than others, so I need Irfanview to let me select what results to keep: size, smallest.
Thank you
Thank you
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