The 22 families
Factors are grouped by what they describe. The largest families reflect where measurable signal lives on modern result pages:
- Structured data · JSON-LD (269) and MicroData (49), MicroFormat (24), Schema.org (28)
- Keyword usage & density (101)
- Headings (51) and Search result / SERP (51)
- Social signals (39), Tech & platform (34), Affiliate & ads (31)
- Size & length (25), Links on the page (24), Meta tags (24)
- Backlinks & authority (23), Title (21), Entities (19)
- Readability & questions (16), Related terms / LSI (11), Trust & contact signals (10)
- Page structure (9), Media & embeds (8), URL & domain (3)
Why the count is honest, not marketing
A large catalogue is only useful if the numbers stay comparable. Every factor maps to a stable Factor ID, so a run in March and a run in June measure the same thing — which is what lets Diff and Trends show real movement instead of re-derived noise.
Correlation, not causation. Measuring 870 factors doesn’t mean maximizing all of them. Most matter for some queries and not others; RankGear shows which ones track position in your field, and by how much.
For the full method — correlation, deficit strategies, and boundaries — see the methodology page. In the app, “What RankGear measures” writes the complete factor reference as its own report.