JSON Validator
Paste or upload your JSON, then click “Validate” to check for errors. The tool will highlight problems and show exact locations so you can fix them quickly. Works instantly in your browser with no installation needed.
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Our JSON Validator tool helps you check and verify JSON data instantly. Simply paste or upload your JSON, and the tool will scan it for syntax errors, missing brackets, invalid keys, and formatting issues. Clear error messages with exact line numbers make fixing problems fast and simple. Designed for developers, testers, data analysts, and API users, this validator ensures your JSON meets the correct structure before using it in applications or integrations. It works entirely online—no downloads, sign-ups, or installations required—keeping your data private. Whether you’re debugging an API response, validating a configuration file, or checking data exports, our JSON Validator saves you time and prevents costly errors.