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Secondary input
Output
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Recent runs
Only execution metadata (time, action, status, duration, and result size) from the last 30 days is stored in this browser, up to 20 runs. Inputs, result content, filenames, location, and device data are never saved.
Direct answer
Use JSON Validator with verifiable output
Parses JSON syntax to report whether the document is valid and where an error may occur.
What does this tool do?
Use it before submitting API payloads or configuration files to find misplaced commas, quotes, and brackets.
Supported inputs
- JSON text to validate
Outputs
- Validity status and an error description
How to use it
- Add JSON text to validate to the input area.
- Review the options needed to validate, then run the tool.
- Inspect validity status and an error description, then copy or download it.
Reproducible example
Input{"active":true,"count":2}The input is reported as a valid object with its root type.
Checks
- For errors, inspect commas and quotes around the reported line and column.
Limitations
- Duplicate object keys and JSON Schema constraints are outside this check.
Privacy
Inputs and results are processed only in browser memory and are not sent to the server, analytics, or browser storage.
Sources and standards
Related tools
Content reviewed:
Search Answer
JSON Validator Search Answer
JSON Validator is a validation / testing / parsers category tool for quick validation and testing, with easy result copying and downloading.
Key Points
- Category: Validation / Testing / Parsers
- Execution mode: browser
- Recent runs is stored in your browser only.
- Inputs are processed during execution but not stored. Recent runs stays in the browser, while lightweight visit, usage, and like metrics are recorded.
How to Use
- Paste or type your input.
- Choose the needed options or fill the secondary input.
- Run the tool from the run bar above the panels.
- Review the result, then copy or download it.
Search Answer
Frequently Asked Questions
What does JSON Validator do?
JSON Validator is a tool for quick validation and testing in the validation / testing / parsers category.
Does JSON Validator store my input?
Inputs are processed during execution but not stored. Recent runs stays in the browser, while lightweight visit, usage, and like metrics are recorded.
When should I use JSON Validator?
JSON Validator is useful when you need to review or organize Validation / Testing / Parsers data quickly.
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