structured-data

lesson

shell schema-org json-ld seo curl http structured-data scraping

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Verifying schema.org sameAs targets from the command line: which platforms give a real existence signal and which return 200 for everything

Auditing a schema.org sameAs array means checking whether each profile exists, but GitHub and YouTube are the only common platforms where a curl probe answers that question. Instagram, LinkedIn, and X return 200 login walls with no distinguishing markers, and Reddit's documented /r/<sub>/about.json endpoint serves HTML instead of JSON to scripted clients.

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