Blur blog highlight image


What size should the featured blog image be? Because if my home page is blurry.
Thank you for your reply.

Hi there

There is no featured images on the Illdy homepage, may I see your website? please provide url

My website :

The future image appeared on my home page :

Hi there

Ok, got it, its a project featured images, in this case its better to use square image, size is not important in this case, you may use square images