Structured data, entities and knowledge graph tooling.
Build connected JSON-LD markup and knowledge graphs
Schemantra provides a visual generator for Schema.org types and relationships, helping teams create connected entity markup without writing JSON-LD by hand. Its documented capabilities include Schema generator, Entity relationships and Knowledge graphs.
Enterprise structured data and semantic content platform
Schema App helps organizations deploy, manage and measure connected structured data across large websites with integrations, templates and expert workflows. Its documented capabilities include Schema deployment, Knowledge graph and Markup monitoring.
WordPress SEO guidance, metadata and structured data
Yoast SEO manages titles, canonicals, XML sitemaps, Schema.org graphs and content analysis inside WordPress with free and premium workflows. Its documented capabilities include SEO analysis, Readability guidance and XML sitemaps. It is most relevant to workflows involving WordPress SEO and Schema.
Modular WordPress SEO with schema and analytics
Rank Math brings metadata, sitemaps, schema generation, redirects, rank tracking and Search Console analytics into a modular WordPress plugin. Its documented capabilities include Schema generator, SEO analysis and Rank tracking. It is most relevant to workflows involving WordPress SEO and Schema.
Automate advanced schema markup across WordPress content
Schema Pro maps WordPress fields to structured data types and applies markup through reusable rules without requiring manual JSON-LD editing. Its documented capabilities include Schema automation, Conditional rules and Custom field mapping.
WordPress SEO toolkit for metadata, schema and sitemaps
All in One SEO provides on-page guidance, XML sitemaps, schema, redirects, local SEO and WooCommerce tools through a WordPress-focused workflow. Its documented capabilities include SEO setup, Schema markup and XML sitemaps. It is most relevant to workflows involving WordPress SEO and Schema.
Free Chrome extension for on-page and technical SEO audits
SEO Diagnostix is a free Chrome extension for inspecting on-page and technical SEO signals. It helps review canonical URLs, hreflang annotations, links, robots directives and Schema.org structured data, and includes sitemap crawling and SERP checks. The extension is designed for page diagnostics and technical QA from the browser. It is available through the Chrome Web Store.