- FULL WIDTH IMAGES: 2560px wide, saved for the web, 72 dpi at 60% quality – in Photoshop
- PAGE AND BLOG IMAGES: 1200px wide, saved for the web, 72 dpi at 60% quality – in Photoshop
- SLIDER/SLIDESHOW GALLERIES: The width of these images will depend on the width you choose for your galleries. 1200 px wide is adequate for most designs. Just follow the same guidelines above for different width images.
There are some third party editors that are designed to optimize your images, such as JPGMini.
I use Photoshop to bulk optimize the images I use in designs. I create an action in Photoshop and then batch edit bulk images. It’s lightening fast.