Developer tool
JSON Validator
Validate JSON instantly and find syntax errors directly in your browser.
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Paste JSON to validate it.
About this JSON validator
This free JSON validator helps you check whether your JSON is valid. It is useful for developers, API testing, debugging, configuration files and structured data.
How it works
Paste your JSON and click Validate. The tool checks the syntax instantly in your browser and shows whether the JSON is valid or contains an error.