// Compare // Methodology

    JSON-LD vs Microdata

    Both formats encode the same schema.org vocabulary. The difference is where the markup lives, how easy it is to maintain, and how reliably engines extract it.

    // Best for

    JSON-LD

    Modern stacks, headless commerce, JS-rendered apps, and AI-citation-eligible content.

    // Best for

    Microdata

    Legacy server-rendered sites where markup-in-HTML is already in place.

    // Skip the tool debate

    Want to know where JSON-LD and Microdata both say you're invisible?

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    // Free_GEO_Snapshot

    Which one is actually right for your store?

    Drop your domain and we'll tell you which stack fits your setup — and what neither tool is catching in AI search.

    Head-to-head

    CriterionJSON-LDMicrodata
    Google's stated preference✓RecommendedSupported
    Maintainability✓Decoupled from HTMLInline with HTML — fragile
    Render reliability (JS sites)✓High — injectable in <head>Low — DOM-dependent
    AI engine extraction✓ReliableHit-or-miss
    Editorial / CMS friendliness✓HighLow
    Validation tooling✓Excellent (Schema Markup Validator, Rich Results Test)Good
    // Verdict

    Use JSON-LD. Google explicitly prefers it, AI engines parse it more reliably, and it decouples markup from presentation HTML. Microdata is acceptable on legacy stacks you cannot refactor — but new builds should ship JSON-LD without exception.

    Frequently asked

    Should I migrate Microdata to JSON-LD?+

    Yes — on any site you actively maintain. The migration is low-risk (you can ship both temporarily), and the maintainability + AI-extraction win is large.

    Can I use both at the same time?+

    Yes, briefly during a migration. Long-term, run one format to avoid drift between the two declarations.

    Does JSON-LD work on JavaScript-rendered pages?+

    Yes — but inject the script tag in the initial server response (or via SSR/static), not after hydration. Late-injected JSON-LD is unreliable for both Google and AI engines.

    // Free_GEO_Snapshot

    Want this framework run on your store?

    Drop your domain — Grant will reply within 24 hours with a 3-point GEO snapshot. Free, no pitch.

    Grant Lauder — Senior SEO Specialist
    Grant Lauder
    Senior SEO Specialist

    // Related comparisons

    GEO (Generative Engine Optimization) vs Traditional SEO

    Not sure which fits your store? Get a free 3-point GEO snapshot in 24h.