
I tried two affordable shareware stand-alone Flash optimizers for the PC (I still have an old Win98SE PC) on my first ever Moho animation, SWF Optimizer Pro and Flash Optimizer.
Here are the files:
Moho original 133 kB
Optimized after Flash Optimizer 75 kB
after SWF Optimizer Pro 83 kB
Mohoptimize claims 50% reduction. In my little test, these optimizers deliver about the same (compression was only moderate, better is possible). Of course, my animation isn't a real test, nor are my Moho skills well enough developed for a real test. The compressed SWF files display visible flutter (as does the original from Moho, but less visible).
It is also possible that these artefacts are caused by the fact that these compressors weren't optimized for SWF files created by Moho. The SWF Optimizer Pro has a lot of options, so it might be possible to tweak it for use with Moho output.
I think stand-alone Flash optimizers can be useful for the occasional webanimation, if you tweak both your animation and SWF compressor so, that the fluttering and other display faults are less visible.
I also have a question: Does anyone know if a stand-alone Macintosh OS X flash optimizer exists?