Schema Viewer

Detect and display all structured data schemas on any webpage.

Schema Viewer is a lightweight developer tool that instantly detects, extracts, and visualises structured data and metadata schemas on any website you visit. With a clean, interactive side panel layout, it parses JSON-LD, Microdata, Open Graph tags, Twitter Cards, and standard SEO meta tags. You can browse through complex data trees using expandable nodes, copy individual keys or values, and click links inside schemas directly. How to use it: 1. Pin the Schema Viewer extension to your toolbar. 2. Click the extension icon on any webpage to open the side panel. 3. View the detected schemas instantly, grouped by type. 3. Click the refresh button in the side panel if the page content changes dynamically. Privacy & Permissions: Schema Viewer is a 100% client-side tool. It does not collect, track, or transmit any user data. All processing and visualisation are done directly on your machine. We request host permissions for websites so we can inspect and scan the markup for schemas, but no data is ever sent off-device.