JSON Validator
Validate JSON syntax and get clear error messages with line and column numbers.
How to use
- 1Paste your JSON into the editor.
- 2Click Validate JSON.
- 3Fix any errors shown, using the line and column numbers as a guide.
Features
- Clear valid/invalid result
- Line and column error location
- Runs entirely in your browser
Supported formats
Privacy
Your JSON is validated locally in your browser and is never sent to our server.
About this tool
The JSON Validator checks whether a block of text is syntactically valid JSON. When it is not, the tool points to the exact line and column where parsing failed, making it faster to spot and fix the problem.
Frequently asked questions
What kinds of errors does this catch?
It catches JSON syntax errors such as missing commas, unclosed brackets, trailing commas and invalid quotes.
Does it check my data against a schema?
No, this tool only checks that the text is syntactically valid JSON, not that it matches a particular schema.
Is my JSON sent to a server?
No, validation happens entirely in your browser.
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