Detect and display all structured data schemas on any webpage.
Users
59
+31 in 30 days
Rating
2.0 / 5
+2.00 in 30 days
Ratings
1
+1 in 30 days
Store rank
#102K
#85K among extensions
Version
1.0.0
updated 17 Jul 2026
Users
monthly, 3 months
Latest, 16 Oct 2026:59 usersMove the mouse over the chart for any month
Ratings count
monthly, 3 months
Latest, 16 Oct 2026:1 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Schema Viewer
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.