Squoosh

While our smartphones take incredible pictures, they're also quite large, which usually makes sharing via email a one-picture-at-a-time, tedious chore.  To assist with that problem, the folks that Google have introduced Squoosh, a free (I love free) web app that will reduce an image's size, in the case below from 6.22 MB to 642 KB achieving a 90% reduction, with minimal loss in quality.  This is also a boon to web site developers, improving page load speed while maintaining picture quality.  All this work is done in your web browser and the pictures never leave your computer.  Just drag or upload a picture, the process automatically begins and when the spinner in the lower right-hand corner turns to a download icon, it's ready to save.

https://squoosh.app