Slow loading

Hello there

My site is kinda slow to load.

I use Highend theme, and I host my site on BlueHost Premium.

I used the site https://tools.pingdom.com/ to measure how long does it take to my site to load. It returned almost 8 seconds.

Scrolling down the results, I could see that the domain “hb-themes.com” is being loaded with my page.

I wonder, why is it that, for retrieving my url, the server seeks hb-themes.com? It’s size is so large. It’s 90% of the amount to be loaded within my url. Is there a way to optimize the site loading speed?

I’ve sent the screenshots of some of the results.

Thank you for your attention