Detect, validate, and generate Schema.org structured data. JSON-LD format preferred. Use when user says "schema", "structured data", "rich results", "JSON-LD", or "markup".

Schema Markup Analysis & Generation Detection 1. Scan page source for JSON LD <script type="application/ld+json" 2. Check for Microdata ( itemscope , itemprop ) 3. Check for RDFa ( typeof , property ) 4. Always recommend JSON LD as primary format (Google's stated preference) Validation Check required properties per schema type Validate against Google's supported rich result types Test for common errors: Missing @context Invalid @type Wrong data types Placeholder text Relative URLs (should be absolute) Invalid date formats Flag deprecated types (see below) Schema Type Status (as of June 2026) Read ../seo/references/schema types.md for the full list. Key rules: ACTIVE (recommend freely): Organization, LocalBusiness, SoftwareApplication, WebApplication, Product (with Certification markup as of April 2025), ProductGroup, Offer, Service, Article, BlogPosting, NewsArticle, Review, AggregateRating, BreadcrumbList, WebSite, WebPage, Person, ProfilePage, ContactPage, VideoObject, ImageObject, Event, JobPosting, Course, DiscussionForumPosting VIDEO & SPECIALIZED (recommend freely): BroadcastEvent, Clip, SeekToAction, SoftwareSourceCode See schema/templates.json for ready to use JSON LD templates for these types. JSON LD and JavaScript rendering: Per Google's December 2025 JS SEO guidance, structured data injected via JavaScript may face delayed processing. For time sensitive markup (especially Product, Offer), include JSON LD in the initial server rendered HTML. NO RICH RESULTS, KEEP IF USEFUL: FAQPage : Google retired FAQ rich results for ALL sites on May 7, 2026 (supersedes the Aug 2023 gov/health restriction). No Google SERP rich result benefit; flag existing FAQPage at Info (not Critical) rather than removal. For genuine user Q&A pages, use QAPage . DEPRECATED (never recommend): HowTo : Rich results removed September 2023 SpecialAnnouncement : Deprecated July 31, 2025 CourseInfo, EstimatedSalary, LearningVideo : Retired June 2025 ClaimReview : Retired from rich results June 2025 VehicleListing : Retired from rich results June 2025 Practice Problem : Deprecation notice 2025 11 05; Search Console / Rich Results Test support removed 2026 01 06 Book Actions : Deprecated/removed from Google rich results; do not recommend it for SERP features. Search Console / Rich Results Test / appearance filter support for CourseInfo, EstimatedSalary, LearningVideo, SpecialAnnouncement, VehicleListing was removed 2025 09 09; Practice Problem support was removed 2026 01 06. Supported for Dataset Search only: Dataset : Not discontinued; consumed by Google Dataset Search, with no Google Search rich result surface. Don't advise removal as if it were killed. Still supported (do not flag): QAPage (expanded comment thread properties 2026 03 24), DiscussionForumPosting, Education Q&A (Quiz / eduQuestionType=Flashcard ). For e commerce, hasAdultConsideration (added 2026 05 20; value https://schema.org/SexualContentConsideration ) is required for adult products. Product.category accepts Text , CategoryCode , or arrays mixing both. Generation When generating schema for a page: 1. Identify page type from content analysis 2. Select appropriate schema type(s) 3. Generate valid JSON LD with all required + recommended properties 4. Include only truthful, verifiable data. Use placeholders clearly marked for user to fill 5. Validate output before presenting 6. For review markup, reject fake reviews and undisclosed incentivized reviews. An incentive must be clearly and prominently disclosed on the page. Common Schema Templates Organization LocalBusiness Article/BlogPosting Output SCHEMA REPORT.md : detection and validation results generated schema.json : ready to use JSON LD snippets Validation Results Schema Type Status Issues ... ... ✅/⚠️/❌ ... Recommendations Missing schema opportunities Validation fixes needed Generated code for implementation Error Handling Scenario Action URL unreachable Report connection error with status code. Suggest verifying URL and checking if the page requires authentication. No schema markup found Report that no JSON LD, Microdata, or RDFa was detected. Recommend appropriate schema types based on page content analysis. Invalid JSON LD syntax Parse and report specific syntax errors (missing brackets, trailing commas, unquoted keys). Provide corrected JSON LD output. Deprecated schema type detected Flag the deprecated type with its retirement date. Recommend the current replacement type or advise removal if no replacement exists.

seo-schema