json validator (lint)
Instantly validate your JSON code and pinpoint syntax errors. Catch missing commas, braces, and quotes with our smart error highlighter and line-by-line feedback.
Getting Started in Seconds
Paste JSON
Enter the JSON code you want to validate into the editor.
Check Status
The tool instantly analyzes the syntax and provides a 'Valid' or 'Invalid' status.
Fix Errors
If errors are found, use the provided line numbers and descriptions to correct your JSON.
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Common
Questions
Have a different question about JSON Validator (Lint)? Feel free to reach out or explore our other documentation.
1Ever found yourself staring at a 'Syntax Error' message in your console and not knowing where the bug is?
Imagine you've written a complex config file or a long API request, but a single missing comma is breaking everything. Our JSON Validator is like a digital inspector, instantly scanning your code and pointing directly to the problem. It doesn't just say 'it's broken'—it tells you exactly which line and character needs your attention, saving you from hours of frustrating manual checking.
2Think of this as your real-time debugging assistant—what kind of errors does it catch?
Imagine you accidentally used single quotes instead of double, or forgot to close a bracket in a deeply nested object. Our validator catches all the common pitfalls specified in the JSON standard (RFC 8259), including unquoted keys, trailing commas, and mismatched braces. It's your first line of defense against buggy data that could otherwise crash your entire application or website.
3Is it safe to validate my sensitive API keys or private configuration files here?
Imagine you're checking a critical production config that contains private credentials—you definitely wouldn't want that being sent to a third-party server. That's why our JSON Validator works 100% 'client-side' in your browser. Your data stays on your machine, and the validation math happens locally, ensuring that your most sensitive information remains strictly private and secure while you fix your bugs.