Below listed are the recommended image sizes for Epic Construction Theme:

Slider Image Size:

Width: 1920px
Height: 899px

Home page About Section Image Size:

Width: 360px
Height: 276px

Homepage Services Section Image Size:

Width: 80px
Height: 80px

Homepage Testimonial Section Image Size:

Width: 98px
Height: 98px

Post featured Image Size (with sidebar):

Width: 847px
Height: 470px

Full-width Blog featured Image Size:

Width: 1170px
Height: 470px