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JSON-LD Validator & Auto-Fixer

Validate, format, and fix your Schema.org JSON-LD code.

How to use?

  • Paste your JSON-LD code into the textarea above.
  • Click "Validate & Fix" to analyze your code.
  • The tool will check for valid JSON syntax and required Schema.org properties.
  • If errors are found, we will attempt to fix them and provide the corrected version below.

JSON-LD Validator: An Overview

JSON-LD (JavaScript Object Notation for Linked Data) is a lightweight, widely adopted format used to add structured data to web pages. By embedding structured data, you help search engines like Google and Bing understand the precise context of your page content, allowing them to present rich snippets—such as review stars, recipe details, or event dates—in search engine results pages (SERPs). Ensuring that your JSON-LD syntax is flawless is vital for avoiding rich snippet errors. The JSON-LD Validator tool is explicitly designed to audit, troubleshoot, and automatically repair common formatting issues in JSON-LD structured data.

Technical Architecture

Under the hood, the JSON-LD Validator is built to seamlessly process both raw JSON objects and complete HTML `` tags, processing only the internal JSON data. You do not need to manually delete the HTML tags before validating.

Why does the validator report that my JSON Syntax failed, but it still provides a "Fixed" output?
When your initial input contains invalid syntax (such as trailing commas, smart quotes pasted from a rich-text editor, or missing quotes around keys), the native JSON parser fails. However, our system's auto-fix feature catches these specific common mistakes, repairs the string, and successfully parses it again. The tool alerts you that the original syntax had issues while conveniently providing the corrected version.
What happens if I forget to include the @context attribute?
The @context attribute is mandatory for Linked Data schemas. If the validator notices that this key is missing from your JSON object, it will mark the "Schema Context" check as failed. During the auto-fix phase, it will automatically inject "@context": "https://schema.org" into the root of your JSON object to ensure it meets fundamental schema requirements.
Does this tool validate against specific schema.org types like Recipe, LocalBusiness, or FAQPage?
This tool focuses on the structural integrity of your JSON (syntax) and the presence of the foundational schema properties (@context and @type). It does not perform a deep property-level validation (e.g., checking if a Recipe schema includes a prepTime). For exhaustive property validation, we recommend using Google's Rich Results Test after ensuring your JSON syntax is flawless with this tool.
Are trailing commas really a problem in JSON-LD?
Yes. While some programming languages allow trailing commas at the end of arrays or objects, the strict JSON standard does not. A trailing comma will cause parsing engines (including search engine crawlers) to throw a syntax error, which can completely invalidate your structured data and prevent rich snippets from appearing in search results. Our validator specifically hunts for and removes these trailing commas.
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