Schema Markup Viewer

Tracking since Apr 1, 2026.

Changelog

• May 4, 2026
  description

  Schema Markup Viewer is a simple and powerful tool for developers and SEO professionals to instantly view Schema JSON-LD structured data on any webpage.
  
  ✨ KEY FEATURES:
  - Instant Detection — Automatically finds and displays all JSON-LD schema markup on the current page
  - Quick Search — Search through schema content with highlighted results and easy navigation
  - Two View Modes — Switch between structured tree view and raw JSON with syntax highlighting
  - One-Click Validation — Validates URL directly or copies HTML to test with Google Rich Results Test and Schema.org
  - Schema Documentation — Provides direct links to standard Schema.org and Google documentation for the detected schemas
  - Copy to Clipboard — Easily copy any schema block as formatted JSON
  - Error Detection — Identifies broken JSON-LD blocks and performs validations against official Google Guidelines (covers the next schemas: Article, Product, FAQPage, BreadcrumbList, Recipe, Event and LocalBusiness), spotting empty values, invalid URLs, missing required fields, and logic inconsistencies
  
  🎯 PERFECT FOR:
  - SEO specialists checking structured data implementation
  - Web developers debugging schema markup
  - Content managers verifying rich snippets
  - Anyone analyzing website structured data
  
  🔒 PRIVACY FOCUSED:
  - No data collection — everything is processed locally in your browser
  - No external servers — your data never leaves your device
  - Minimal permissions — only accesses pages when you click the icon
  
  📖 HOW TO USE:
  1. Navigate to any webpage
  2. Click the Schema Markup Viewer icon
  3. View all detected schemas in an organized accordion layout
  4. Search through schema content
  5. Toggle between tree view and raw JSON
  6. Use the Validate Schema dropdown to test your markup
  
  Feel free to reach out with any ideas or feedback to make this tool even better.

  Schema Markup Viewer is a simple and powerful tool for developers and SEO professionals to instantly view Schema JSON-LD structured data on any webpage.
  
  ✨ KEY FEATURES:
  - Instant Detection — Automatically finds and displays all JSON-LD schema markup on the current page
  - Quick Search — Search through schema content with highlighted results and easy navigation
  - Two View Modes — Switch between structured tree view and raw JSON with syntax highlighting
  - One-Click Validation — Validates URL directly or copies HTML to test with Google Rich Results Test and Schema.org
  - Schema Documentation — Provides direct links to standard Schema.org and Google documentation for the detected schemas
  - Copy to Clipboard — Easily copy any schema block as formatted JSON
  - Error Detection — Identifies broken JSON-LD blocks and performs validations against official Google Guidelines (covers the next schemas: Article, Product, FAQPage, BreadcrumbList, Recipe, Event, LocalBusiness, VideoObject, JobPosting, Organization, SoftwareApplication), spotting empty values, invalid URLs, missing required fields, and logic inconsistencies
  
  🎯 PERFECT FOR:
  - SEO specialists checking structured data implementation
  - Web developers debugging schema markup
  - Content managers verifying rich snippets
  - Anyone analyzing website structured data
  
  🔒 PRIVACY FOCUSED:
  - No data collection — everything is processed locally in your browser
  - No external servers — your data never leaves your device
  - Minimal permissions — only accesses pages when you click the icon
  
  📖 HOW TO USE:
  1. Navigate to any webpage
  2. Click the Schema Markup Viewer icon
  3. View all detected schemas in an organized accordion layout
  4. Search through schema content
  5. Toggle between tree view and raw JSON
  6. Use the Validate Schema dropdown to test your markup
  
  Feel free to reach out with any ideas or feedback to make this tool even better.

Permissions & access

Permissions

activeTabscripting

Host access

None declared

Screenshots

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