Lots of limitations!

… compared to their web service:
— will not compress files under 2MB (thus its useless for most web publications like blogs etc, whereas the algo works very well on small files too)
— cant chose final destination, but will overwrite your originals JPEGs

In the end: dont buy this until this corrections are made (if)
Their web service is free and doesnt have these limitations.

Manuel75 about JPEGmini, v1.0