JSON Validator
Real-time JSON Validation: Validates JSON syntax in real-time and provides detailed error information.
Standard: RFC 8259 - JSON Data Interchange Format
The JSON Validator finds JSON syntax errors in real-time and provides detailed information about error locations and causes. All processing happens in your browser; no data is sent to servers.
How to Use
- 1
Paste your JSON data into the input area.
- 2
Real-time validation happens automatically.
- 3
Valid JSON shows a ✓ mark with a success message.
- 4
Errors show detailed error messages with locations.
Use Cases
API Development
Quickly find syntax errors in REST API request/response JSON.
Config File Validation
Validate syntax of config files like package.json, tsconfig.json, etc.
Data Validation
Check JSON data validity and fix errors.
Learning Tool
Get real-time feedback while learning and practicing JSON syntax.
What is JSON Validation?
JSON validation checks if JSON data complies with the RFC 8259 standard.
The validator finds syntax errors and tells you the exact location of errors.
Common errors: unclosed brackets, missing quotes, trailing commas, duplicate keys, etc.
Uses the browser's JSON.parse() method for fast and accurate validation.
Frequently Asked Questions (FAQ)
Q.Is my data safe?
A. Yes. All validation happens in your browser. No data is sent or stored.
Q.What errors can it find?
A. Syntax errors, invalid quotes, unclosed brackets, trailing commas, duplicate keys, invalid escape characters, etc.
Q.Does it format JSON?
A. This tool focuses on validation only. Use JSON Formatter for formatting.
Q.Can it validate very large JSON?
A. Within browser memory limits. Can quickly validate files of several MB.
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