JSON validator

Validate, format, and beautify your JSON data with our free online JSON validator
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What is a JSON Validator ?

A JSON validator is an essential tool for developers and data analysts that checks whether your JSON (JavaScript Object Notation) data follows the correct syntax and structure. Our free online JSON validator helps you identify syntax errors, missing brackets, incorrect formatting, and other common issues in your JSON code.

Key Features

Instant JSON Validation
Check JSON syntax in real-time
Error Detection
Identify and locate syntax errors
Free to Use
No registration or payment required
Browser-Based
No software installation needed
Secure
Your data is processed locally in your browser
Mobile Friendly
Works on desktop, tablet, and mobile devices

When to Use JSON Validator

API Development
Validate JSON responses and requests
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Configuration Files
Check JSON config files for applications
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Data Import/Export
Ensure JSON data integrity
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Web Development
Validate JSON used in AJAX calls
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Database Operations
Check JSON data before database insertion
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Testing & Debugging
Identify JSON formatting issues
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Common JSON Errors

Missing Quotes -
All strings must be in double quotes
Trailing Commas
Remove commas after the last element
Single Quotes
Use double quotes instead of single quotes
Unescaped Characters
Properly escape special characters
Missing Brackets
Ensure all brackets are properly closed

JSON Format Basics

Data is in name/value pairs
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Data is separated by commas
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Curly braces hold objects
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Square brackets hold arrays
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Strings must be in double quotes
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Frequently Asked Questions

Is this JSON validator free ?
Yes, our JSON validator is completely free to use with no limitations or registration required.
Is my data secure when using this validator ?
Yes, all JSON validation is performed locally in your browser. Your data is never sent to our servers.
Can I validate large JSON files ?
Yes, our validator can handle large JSON files, though very large files may take longer to process.
Does this work on mobile devices ?
Yes, our JSON validator is fully responsive and works on all devices including smartphones and tablets.