Reduce data size: by compression rather than resizing
I have Bliss set to ensure my art is less than 1mb, but I ideally like a pixel size as large as possible to future proof it for use with applications. I was surprised to find out 'Reduce data size' does so by reducing the pixel size of images. How about incorporating some form of lossy compression that retains the image pixel proportions, but compresses the data in the image just enough to get down to the file data size setting? I'd imagine this wouldn't greatly affect the quality of images, but would reduce data size without having to shrink the image. This will save me having to do so externally in Photoshop for multiple album covers, then reimporting back in via Bliss. Thanks!
Really nice idea.
This might not help, but if your images aren't JPEGs, you could also use the image format rule to convert them, that would imply compression and would save a lot of space.
A lot of iTunes users end up with PNGs these days, it has become the default for some iTunes purchases.