JSON Validator
Our free JSON Validator helps you check if your JSON is valid, with detailed error messages showing exactly where the problem is!
How to Use
- Paste JSON — Copy and paste your JSON into the text area above.
- Validate — Click "Validate JSON" to check if your JSON is valid.
- Review errors — If there are errors, read the detailed message and fix the issue.
Common JSON Errors
- • Missing commas: Forgetting commas between object properties or array items.
- • Trailing commas: Extra commas at the end of objects or arrays.
- • Unquoted keys: Object keys must be in double quotes, not single quotes or no quotes.
- • Single quotes: JSON requires double quotes, not single quotes.
Frequently Asked Questions
What is JSON validation?
JSON validation is the process of checking if a string of text conforms to the JSON (JavaScript Object Notation) syntax rules. Valid JSON can be parsed correctly by JSON parsers in any programming language.
Why is valid JSON important?
Invalid JSON can cause APIs to fail, applications to crash, or data to be corrupted. Valid JSON ensures that data can be exchanged reliably between different systems and programming languages.
Is my JSON stored or sent to a server?
No. All validation happens entirely in your browser using JavaScript. Your JSON code never leaves your device, and no data is sent to our servers.