17.3
Baseline Labs Schema Generator reads a live page, identifies its type, and creates JSON-LD structured data.
Free planWebAPISelf-hosted
Best Schema Markup Tools in 2026
Structured data work involves creating markup, checking its validity, and keeping it aligned with a site's needs. Compare supported schema types, schema validation, and rich-result preview alongside bulk generation and markup monitoring. API access and WordPress support may help distinguish workflow fit; free-plan availability and paid-from pricing offer cost context. Baseline Labs Schema Generator, JSON Schema App…
26.8
VitalSentinel Schema Validator checks structured data on one page URL and sorts findings into missing, recommended, and broken information.
Free planWebAPI
36.7
Rolling Schema is a website monitoring and structured-data service that re-crawls pages, detects content changes, and regenerates validated schema.org markup.
Free planWebAPI
- 4
BlueGrid Schema Validator
BlueGrid Schema Validator is a free web tool for generating JSON-LD schema markup and checking existing markup against schema.org vocabulary and…
Free planWeb6.6Free plan - 5
JSON Schema App SaaS Schema
JSON Schema App SaaS Schema automates the creation, validation, management, and deployment of JSON-LD structured data for websites and web pages.
Free planWeb6.6From $14 a month - 6
EasySchema
EasySchema is a web-based Schema.org structured data generator and SEO tools site.
Free planWeb6.2Free plan - 7
Google Rich Results Test
Google Rich Results Test is a free web tool for checking structured data and identifying rich result types a page may enable in Google Search.
Free planWeb6.1Free plan - 8
Schema.dev
Schema.dev provides tools for building and testing structured data for webpages, with deployment described as coming soon.
Free planWebAPIExtension6.1Free plan - 9
TechnicalSEO Schema Markup Generator
TechnicalSEO Schema Markup Generator is a free web tool for producing Schema.org structured data as JSON-LD.
Free planWeb6.1Free plan - 10
JSON-LD Generator
JSON-LD Generator is a free web tool for creating structured data markup.
Free planWeb6.0Free plan - 11
Schema Pro
Schema Pro is a WordPress plugin for adding structured data and schema markup without coding.
WebSelf-hosted6.0From $69 a year - 12
Schema.biz
Schema.biz is a web-based collection of tools for structured data markup, database schemas, and API specifications.
Free planWeb6.0Free plan - 13
SchemaValid
SchemaValid is a free browser-based toolkit for structured data and technical SEO.
Free planWeb6.0Free plan - 14
SEO Schema Markup
SEO Schema Markup is a free web toolkit for creating schema.org JSON-LD and validating markup against Google requirements.
Free planWeb6.0Free plan - 15
WooCommerce Rich Snippets & Schema Markup
WooCommerce Rich Snippets & Schema Markup is a WordPress plugin that adds structured data to WooCommerce pages, helping search results display…
Free planWeb6.0Free plan - 16
Schema & Structured Data for WP & AMP
Schema & Structured Data for WP & AMP is a WordPress plugin that generates JSON-LD structured data to organize site content for SEO.
WebSelf-hosted5.9From $99 a year - 17
StructuredValidator
StructuredValidator is a web tool for checking structured data, with validation focused on JSON-LD.
Free planWeb5.9Free plan - 18
uSchema
uSchema is a WordPress plugin that automates structured data markup by connecting post metadata, taxonomies, and custom fields to Schema.org properties.
WebSelf-hosted5.9$25 one-time - 19
Schema
Schema is a self-hosted WordPress plugin that generates schema.org structured data in JSON-LD for site content.
Self-hosted5.8From $79.20 a year - 20
Schema Markup Generator
Schema Markup Generator creates JSON-LD markup from details about a webpage or business.
Free planWeb5.8Free plan - 215.6
- 22
JSON-LD Playground
JSON-LD Playground is a free web tool for experimenting with JSON-LD markup: enter JSON and inspect the generated output.
Web5.6 - 23
Schema Markup Info
Schema Markup Info is a free web tool for creating schema markup and checking existing structured data.
Web5.6 - 24
Schema App
Schema App is an enterprise schema markup solution that builds a content knowledge graph for search engines and AI systems.
WebExtension5.3