Hello Community,

I've been trying to optimize my sites for faster load times and im getting a Grade F on Add Expires headers on YSlow.

I've added "Expire Web Content" after 8days on IIS 

Added .css, .gif. .jpg, .png, .js extensions with "User-mode caching" & "Kernel-mode caching" on the Output caching section.

After all that I was still getting grade F, last thing I did was add <add name="Cache-Control" value="public" />
to my web.config still no changes?

Anyone have any insight on this

Thanks