methodology / SEO & Discoverability / #39
Schema.org type validity (parsed JSON-LD)
#39 · Recommended · Web Quality · weighted · SEO & Discoverability · weight 1.3% · impl implemented · method v1.2.0
Web Quality factor
This factor is part of Web Quality — the weighted 0..100 score that sits above Web Standards. Its weight depends on what kind of site is being measured. Web Standards items take priority; this factor only enters the score once Web Standards passes.
- Base weight
- 0.7 applied to every site type unless overridden below
- Why this weight
- Schema.org type validity — invalid JSON-LD is silently broken.
Per-site-type overrides
| Site type | Weight | Δ vs base |
|---|---|---|
| E-commerce | 0.9 | +0.2 |
| News / Publisher | 1.0 | +0.3 |
| Personal site | 0.3 | -0.4 |
Site types not listed inherit the base weight.
What this means for your business
The hidden tags that describe your business to Google only work if they're written correctly. A typo or wrong format and Google ignores them, so the stars, hours, and prices never show up next to your listing.
Plain title: Whether your behind-the-scenes labels are valid
What we measure
Having structured data isn't enough — it has to actually validate. Errors prevent Google from showing rich results in search.
How to improve your score
Validate your JSON-LD at search.google.com/test/rich-results and fix any reported errors. Most issues are missing required fields or wrong type values.
Facts
Implementation notes
Parse JSON-LD blocks from the HTML, validate each against schema.org type definitions, report validity.
Scoring
Scoring formulas are versioned with the methodology. The current method (v1.2.0) maps raw measurements to pass, warn, fail. Factor weights determine how much each contributes to the composite — see the methodology index for the full table.
Cited by these standards
Standards in the Standards Library whose satisfiedBy requirement tree references this factor. Each link goes to the standard's full entry — methodology, scope, and the other factors it relies on.
Version history
| Version | Change | Date |
|---|---|---|
| v1.2.0 | Factor introduced. Status: live. Scoring impl: implemented. | 2026-04-25 |