Webflow images not on published site showing up on page speed

Hi Guys

I hope you can help!!
I have just analaysed my website on website grader which revealed that I have a lot of page requests (Website Grader - Check your Pages for Speed and SEO); I decided to inspect the page and recorded the network activity of the site - looking specifically at images there are 140 image requests but lots of them ar not visible anywhere on the published site (they are just in my image folder)
Can anyone explain how i can fix this please
https://preview.webflow.com/preview/yellowbrick?utm_source=yellowbrick&preview=09316112f7525ced0f7a35dd3ca4170f

Kind Regards
Shane