Private browser processing. No account required.

Schema and structured data · Validator

Schema Markup Validator

Schema Markup Validator gives you a fast, focused way to validate JSON-LD syntax and check basic @context and @type structure without claiming rich-result approval. Everything runs locally in this tab.

✓ Optimized for validator tasks✓ Runs locally✓ Clear validation report and copy findings
Runs in your browserLocal files stay on this device · No account
Paste the complete value you want checked.0 characters
Issues are reported without silently changing the input.Ready
HOW TO USE IT

Get a reliable result in three steps

  1. 1

    Paste the complete content you want to validate.

  2. 2

    Run validation and review any line, field, or syntax guidance.

  3. 3

    Correct the source and validate again until the report passes.

What this tool does

Schema Markup Validator gives you a fast, focused way to validate JSON-LD syntax and check basic @context and @type structure without claiming rich-result approval. Everything runs locally in this tab.

The result is produced only after the input is checked. If the value cannot be processed, the workspace reports a specific error instead of guessing.

Features

  • Local browser processing
  • Non-destructive syntax and structure checks
  • Actionable validation feedback
  • Prepared valid example for immediate testing

Input and output

Input
text
Output
text
Processing
Local browser

Example

{"@context":"https://schema.org","@type":"Article","headline":"Private browser tools","author":{"@type":"Person","name":"Ada"}}

Limitations

  • Review important output before using it in production.
  • Very large inputs remain subject to browser memory limits.
  • This syntax-only validator does not call Google or guarantee rich-result eligibility.
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