- There are other websites with way more authority talking about SGML. (Like the W3C website).
- You have no/little sites or forums linking to your content.
- Your page titles are uninformative. Biggest offender is probably the homepage, with a page title of "index". But even for your reference page, it it is just "Syntax Reference" (way too general), and Google actually uses your page headings to repair this to "SGML Syntax Reference". Try inverse breadcrumb style "SGML Syntax Reference | Docs | SGML.js". BTW: you ranked 2nd for "SGML Syntax Reference".
- Suspicion: Content not visible (like those in the content slider) is ranked lower than always visible content. Chrome headless crawler can detect this. Add this slider content as regular text to your homepage, and also try to expand content there. Include links to your latest blogs.
- I prefer hierarchical headings, not just sections and <h1> for everything. This, because hierarchical headings can not hurt, but non-hierarchical headings could hurt.
- Finally, SGML being a standard, there are simply a lot of competitors for this keyword. These competitors are not commercial competitors, but authoritative websites with lots of informative content. Exactly the sites that Google likes to rank high. If you want to rank for SGML, you may be fighting an uphill battle.
I'm aware of some of the issues you mentioned, but don't you think my site, with the depth of information provided, deserves at least a mention among the other ~200 ones? I'll try and fix the heading issues first, then see if search results improve.
- You have no/little sites or forums linking to your content.
- Your page titles are uninformative. Biggest offender is probably the homepage, with a page title of "index". But even for your reference page, it it is just "Syntax Reference" (way too general), and Google actually uses your page headings to repair this to "SGML Syntax Reference". Try inverse breadcrumb style "SGML Syntax Reference | Docs | SGML.js". BTW: you ranked 2nd for "SGML Syntax Reference".
- Suspicion: Content not visible (like those in the content slider) is ranked lower than always visible content. Chrome headless crawler can detect this. Add this slider content as regular text to your homepage, and also try to expand content there. Include links to your latest blogs.
- I prefer hierarchical headings, not just sections and <h1> for everything. This, because hierarchical headings can not hurt, but non-hierarchical headings could hurt.
- Finally, SGML being a standard, there are simply a lot of competitors for this keyword. These competitors are not commercial competitors, but authoritative websites with lots of informative content. Exactly the sites that Google likes to rank high. If you want to rank for SGML, you may be fighting an uphill battle.