I would use Google's own lighthouse tool for all my test, just because its Google's and it would make sense they would use it for ranking over other tools.
[URL unfurl="true"]https://pagespeed.web.dev/?utm_source=psi&utm_medium=redirect[/URL]
When someone lands on the site they should be in a state of flow, the Nielsen Norman Group studied eye-tracking data and found 80.3% of people’s attention is spent above the fold.
A Notre Dame study showed sliders kill conversions and many studies since show that videos in headers also kill conversion.
Multiple case studies have shown that one big image sometimes called a Hero image, increases conversions. CrazyEgg said Dell, Saloman, and Kindercare all saw improvements after redesigning their sites to include hero images.
Conversion Fanatics, said they saw a 40% increase in leads just by setting up the top image correctly.
You’ve got milliseconds to convince someone that their life would be better, happier, and more productive if they just owned your car, in an area the size of a business card.
And recent studies have shown that user’s attention span’s on the decline.
So your hero image should focus on the main keyword of the page, clarify the offer, enhance the flow, nod at your CallToAction, show your benefits, answers some questions, and paint a picture that puts your customer in the center of it, playing the part of the hero, their problem as the villain, and you as their guide.
And studies have shown, when done correctly ... this can increase conversions by as much as 40%.
And it needs to be done for every page on the site and every image on the site needs to be optimized to rank, no one optimizes their images to rank, so ranking images will drive traffic and is pretty easy to do.
