Hi, the author here. I've been doing some landing pages with SEO checking in my spare time. I often forgot to check SEO in the end, did SEO unfriendly changes and was not aware of them for some time.
Being a programmer I thought immediate (red) feedback like in acceptance/unit tests would be great for SEO. So I wrote a very basic small Javascript library for me which you can include in your pages. The library, if included, does continuously (on page load) check onpage SEO like image tags, H1, META descriptions etc.
It helped me to not forget SEO, and I've learned a little bit. I hope it helps you with your landing pages. If you want more checks included, you know how Github works :-)
Being a programmer I thought immediate (red) feedback like in acceptance/unit tests would be great for SEO. So I wrote a very basic small Javascript library for me which you can include in your pages. The library, if included, does continuously (on page load) check onpage SEO like image tags, H1, META descriptions etc.
It helped me to not forget SEO, and I've learned a little bit. I hope it helps you with your landing pages. If you want more checks included, you know how Github works :-)