Validate JSON-LD structured data, detect syntax problems, identify schema types and review important properties before adding schema markup to your website.
Paste your JSON-LD structured data below. The validator runs directly in your browser and checks JSON syntax, schema type, common properties and basic structural issues.
Paste a complete JSON-LD object or a JSON-LD graph. Script tags are also accepted.
Run validation to see the detected schema type, structure and checks.
The tool focuses on the basic structural signals you should review before deploying JSON-LD. It does not claim that valid syntax guarantees eligibility for a Google rich result.
Checks whether the supplied markup can be parsed as valid JSON.
Detects the main value of the @type property.
Checks for a Schema.org context and flags missing context.
Reviews basic structural properties such as @type and object nesting.
Recognizes JSON-LD using @graph and counts its schema objects.
Highlights empty markup, malformed JSON and missing foundational fields.
A parser check is only one part of structured-data implementation. Always compare the markup with the visible page content and the schema type's documentation.
Schema should describe content that actually exists on the page. Avoid adding properties simply to create a larger markup block.
Use the most specific applicable Schema.org type supported by your content and business context.
Different schema types have different recommended or required properties. Check the relevant documentation before publishing.
After implementation, test the actual published page and monitor Search Console or other relevant validation tools.
Use valid JSON syntax, double quotes and properly closed braces, brackets and strings.
Confirm the @context points to Schema.org and that your selected type is appropriate.
Make sure names, dates, authors, products and other properties reflect visible or legitimately associated content.
Do not use schema properties or review markup solely to influence search appearance when the content does not support them.
It checks JSON syntax, looks for Schema.org context, detects the main schema type, recognizes JSON-LD graphs and reviews several basic structural conditions.
Yes. The tool strips a standard script wrapper when present and validates the JSON-LD contained inside it.
No. Valid JSON-LD only means the markup can be parsed. Search features have additional requirements, content guidelines and eligibility conditions.
No. The validation logic runs in your browser using JavaScript, so the pasted schema is not submitted to an external validation API by this tool.
No. This is a practical browser-based structural validator rather than a complete implementation of every Schema.org type and property constraint.
Review the selected schema type, confirm that properties match the page, deploy it, and then test the live implementation with the appropriate search-engine or structured-data testing resources.
Yes. You can generate JSON-LD with your Schema Markup Generator, copy the result and paste it here for a basic syntax and structure review.
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