Thanks for this detailed feedback. Another user somewhere else down this comment thread gave similar feedback and I think together it's enough for me to throw together some alternative landing page layouts.
Funnily enough I apply some of these things in a different context to READMEs for my popular GitHub projects[1], but whenever I see them applied on a product page I often click away very quickly because I associate with snake oil (it wouldn't surprise me that I'm in the minority here).
Well one more piece of advice for you, then: Don't use an orange square for your webpage icon, I get it mixed up with all my open HN tabs!
Ha ha only se...mi-kidding, quarter-serious.
I second this, especially the part about adding headings.
Also, the line length (in characters) is crazy long. You ought to constrain the width of your text by putting it in columns or blocks, because you're trying to sell me something and I'm too lazy to resize my browser window just to get a not-unpleasant reading experience. I'd do this for https://danluu.com, but not yours yet.
Simple general rule of digital marketing: No one reads website copy. They look at pictures and scan headings.
Another simple rule: I inherently don’t care about your product if I’m reading your site for the first time, so don’t spend time describing your capabilities. Simply describe how my life will be better if I use your product, and show me the product doing those things.
Less words more pictures. Less words more value.
(Sorry for being blunt, just trying to help with your conversions)