James Huff on "Images not sharp"

I have pictures that are good and sharp on my photo edit software, and on shutterfly, but when I put them in a post they become very fuzzy and look bad.
What is going wrong?
Is there a service that will allow access from my page to a quality viewer?
Thanks
Bill

WordPress applies some compression to the images when it generates the smaller scaled down versions as part of its responsive image support: https://make.wordpress.org/core/2015/11/10/responsive-images-in-wordpress-4-4/

Plugins like https://wordpress.org/plugins/disable-jpeg-compression/ and https://wordpress.org/plugins/force-jpeg-quality/ can disable that, alteatively https://wordpress.org/plugins/ewww-image-optimizer/ can allow you to to further tweak the compression.