Does valid JSON mean my API is correct?
No. Validation confirms JSON syntax only. It does not verify a specific API schema or business rules.
Developer tools
Validate JSON syntax before you ship it.
Paste a payload to check JSON syntax locally and get a direct answer on whether the browser can parse it.
Local check browser local
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One input
Local onlyPaste JSON to validate
Paste JSON and run this focused tool entirely in your browser.
How it works
Made for one clear task.
JSON validation checks whether a payload follows the JSON grammar and can be parsed successfully. Use it for API responses, configuration files, or copied snippets before formatting, converting, or sharing them. Syntax validation does not confirm an API schema or business rules.
- Uses the browser's native JSON parser
- Reports parse errors for invalid input
- Does not upload pasted data
Common questions
Validate JSON syntax before you ship it. FAQs
Can I validate a JSON file?
Paste its contents into the input field to validate the text locally.