This feature is built into Jpeg images, though most image editors don't save them with this enabled by default. People call them progressive jpegs. https://www

This feature is built into Jpeg images, though most image editors don't save them with this enabled by default. People call them progressive jpegs. https://www.thewebmaster.com/dev/2016/feb/10/how-progressive-jpegs-can-speed-up-your-website/ https://www.thewebmaster.com/dev/2016/feb/10/how-progressive...