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Structured Data Testing Tool
A schema validation tool designed for SEO professionals to test and audit structured data implementation on web pages
last checked Jul 15, 2026 · HTTP 403
CohortClass of 2026What it is
A schema validation tool designed for SEO professionals to test and audit structured data implementation on web pages. It identifies which schema types are missing from your markup and validates existing structured data against Google's standards, serving as a replacement for Google's retired testing tool.
HTTP liveness
9 probes since Jun 16Jun 16Jul 15
AliveHard-dead (404/5xx/parked)RedirectedUnverified (timeout/DNS/block)
Observed events
probes · press · GitHub- Jun 16, 2026First probe — unverifiedCloudflare block
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Pulse Indexobserved activity
9 probes0 pressGitHub –Tranco –
Not enough observed signals for a Pulse Index (needs 2+ signal families).
Cohort survival · Class of 2026weekly
567 products launched in 2026 · 100% still active
567 active0 sunset
Still active
100%
Median lifespan
4.9y