Free Schema Checker Validate Your Structured Data

Advanced JSON-LD Validation

Ensure your website communicates perfectly with Google's Rich Snippets. Fetch live schemas from any URL or paste raw JSON-LD to detect syntax errors, visualize the node tree, and validate your semantic markup.

Language
3 left / hour
AWAITING TARGET DATA
Raw JSON-LD Source
/* Raw source will appear here */
Visual Node Tree
/* Visual tree will appear here */
0
Pages Audited
0
Schemas Detected
0
Errors Caught
60:00
API Reset In
Super Features
Dual-Pane Inspection
Our developer console displays the raw JSON-LD with syntax highlighting on the left, alongside a beautifully parsed visual node tree on the right for maximum readability.
Multi-Schema Extraction
Pages often contain multiple structured data snippets (e.g., Article, Breadcrumb, Organization). Our Regex engine finds and extracts all of them simultaneously.
Strict Syntax Validation
A single missing comma breaks your entire schema for Google. The bottom Validation Bar acts as a strict compiler, instantly turning red and catching exact parsing errors.
Live DOM Fetching
Don't rely on viewing page source. Enter a live URL, and our secure backend proxy will bypass CORS to extract the exact markup currently deployed on your server.
Offline Manual Mode
Testing new schema before deployment? Paste your raw JSON directly into the console. The validator runs entirely client-side, ensuring your unreleased data remains private.
Recursive Visualizer
Deeply nested schemas (like FAQPage with multiple Question/Answer nodes) are cleanly unpacked by our recursive JavaScript engine into an easy-to-follow visual hierarchy.
How to Use
01

Select Ingestion Method

Choose 'Live Fetch' to scan a public URL, or switch to 'Raw JSON' if you want to paste code directly from your editor.

02

Execute Inspection

Click Inspect. The engine will extract the `<script type="application/ld+json">` tags, compile the data, and render the dual-pane view.

Validate & Debug

Check the bottom Validation Bar. If it's green, your schema is structurally sound. Review the Visual Node Tree to ensure all properties mapped correctly.

Why SchemaRadar AI is Superior
Design
💻

Developer-First UI

We abandoned standard web forms. The Holographic Inspector Terminal feels like a native code editor, making technical SEO audits comfortable and professional.

Performance
⚡

Zero-Latency Parsing

While fetching relies on an API, the actual JSON compilation, syntax highlighting, and recursive tree building happen instantly on your device's RAM.

Reliability
🔍

Unforgiving Compiler

Google will ignore your entire schema if a single bracket is misplaced. Our strict JSON parser catches what traditional linters might miss, saving your rich snippets.

Success