Free JSON-LD Schema Validator — Instant Check
JSON-LD Schema Validator
A JSON-LD validator parses your structured data and checks it against schema.org: valid JSON syntax, a resolvable @context, a recognised @type, and the properties Google requires before it will render a rich result. Most failures are not syntax errors — they are valid JSON missing a required property such as Product.offers or Review.author. Paste your markup below for a line-by-line verdict.
Paste any JSON-LD markup and validate it against schema.org rules — required properties, syntax, and rich-result eligibility. Free, no signup.
Free JSON-LD Schema Validator — Instant Check is part of LemRank, the rank intelligence platform for SEO agencies and in-house teams: daily rank tracking, SERP change detection, AI Overview and LLM visibility, competitor gap analysis, site audits and white-label client reporting.