I received a lot of images of Kiev and Vinnitsia records from https://jewua.info/jewish-genealogy-search-at-ukraine/
I think you can sign up and do some basic searches for free. Then if you pay they will let you do searches that show more information for more money they will send you images and for additional fees send translations. However I think most of Kiev and Vinnitsia images are available for free from Alex Krakovsky's website: https://www.tkfgen.org/open_sources_ak_p01.html
He just gave an excellent webinar for JewishGen. There he discussed his Wikipedia website: https://uk.wikipedia.org/wiki/%D0%84%D0%B2%D1%80%D0%B5%D0%B9%D1%81%D1%8C%D0%BA%D0%B5_%D0%BC%D1%96%D1%81%D1%82%D0%B5%D1%87%D0%BA%D0%BE
There you can click on translate to English if you have a modern browser. So it is much easier to use than the other one I gave.