BracketView is an advanced free online JSON viewer, formatter, validator, and AI-powered repair tool. It allows you to view JSON data in an interactive tree structure, format and beautify JSON, validate JSON syntax, compare JSON files, and automatically fix broken JSON using AI. No installation required. No signup required.

How does the AI JSON fixer work?

BracketView's AI JSON fixer uses advanced algorithms to automatically detect and repair common JSON syntax errors. It can fix missing quotes, trailing commas, unclosed brackets, and other syntax issues. Simply paste your broken JSON and click 'Fix with AI' to get valid JSON instantly. No installation required. No signup required.

What JSON errors can BracketView fix automatically?

BracketView can automatically fix: missing or extra commas, unquoted keys and values, single quotes instead of double quotes, trailing commas, unclosed brackets and braces, missing colons, invalid escape sequences, and more. The AI repair feature handles even complex nested JSON structures. No installation required. No signup required.

How do I use BracketView to view JSON?

Simply paste your JSON data into the text editor or upload a JSON file. You can then switch to the Viewer tab to see your JSON in an interactive tree structure with expandable/collapsible nodes. The Graph view provides visual representation of JSON relationships. No installation required. No signup required.

Can I format JSON with BracketView?

Yes! BracketView includes a powerful JSON formatter that beautifies your JSON with proper indentation. Just click the 'Format' button to format your JSON data instantly. You can also customize font family and export formatted JSON. No installation required. No signup required.

Does BracketView validate JSON?

Yes, BracketView validates JSON syntax in real-time. Invalid JSON will be highlighted, and you'll receive detailed error messages showing the exact line and position of issues to help you fix any problems. No installation required. No signup required.

Can I compare two JSON files?

Yes! BracketView includes a JSON comparison feature that allows you to compare two JSON objects side-by-side and see the differences highlighted. Added, removed, and modified fields are color-coded for easy identification. No installation required. No signup required.

Is BracketView free to use?

Yes, BracketView is completely free to use including the AI JSON repair feature. There are no registration requirements, no hidden fees, and no limitations on usage. No installation required. No signup required.

Is my JSON data secure with BracketView?

Absolutely! All JSON processing happens locally in your browser. Your data never leaves your device for basic operations. The AI repair feature processes data securely and doesn't store any information. BracketView respects your privacy completely.

Do I need to install anything to use BracketView?

No installation required! BracketView works entirely in your web browser. Just visit bracketview.in and start using it immediately. It works on all modern browsers including Chrome, Firefox, Safari, and Edge.

Free Online JSON Validator

Validate your JSON syntax instantly. Get detailed error messages with exact line numbers and positions. Fast, secure, and completely free.

Start Validating JSON Auto-Fix with AI

Why Use Our JSON Validator?

Instant Validation

Get real-time feedback as you type. Our validator checks your JSON syntax instantly without any delays.

Detailed Error Messages

Pinpoint exact error locations with line numbers, column positions, and clear descriptions of what went wrong.

100% Private & Secure

All validation happens in your browser. Your JSON data never leaves your device - complete privacy guaranteed.

AI-Powered Auto-Fix

Found an error? Let our AI automatically fix common JSON syntax issues with a single click.

File Upload Support

Upload JSON files directly from your computer. Supports large files for comprehensive validation.

Completely Free

No registration, no limits, no hidden fees. Use our JSON validator as much as you need, completely free.

How to Validate JSON Online

Paste or Upload Your JSON

Copy your JSON data and paste it into the editor, or click the upload button to select a JSON file from your computer.

View Instant Results

BracketView automatically validates your JSON as you paste. Valid JSON shows a success indicator, while errors display detailed messages.

Fix Errors or Auto-Repair

Use the detailed error messages to manually fix issues, or click the "Fix with AI" button to automatically repair common syntax errors.

Common JSON Errors We Detect

Missing Commas

{"name": "John" "age": 30}

Missing comma between properties

Trailing Commas

{"name": "John", "age": 30,}

Extra comma after last property

Unquoted Keys

{name: "John", age: 30}

Property names must be in double quotes

Single Quotes

{'name': 'John'}

JSON requires double quotes, not single quotes

Unclosed Brackets

{"items": [1, 2, 3}

Missing closing bracket for array

Invalid Values

{"active": True}

Boolean values must be lowercase (true/false)

Frequently Asked Questions

What is JSON validation?▼

JSON validation is the process of checking whether a JSON string follows proper syntax rules. Valid JSON must have properly quoted keys and strings, correct use of brackets and braces, proper comma placement, and valid data types (strings, numbers, booleans, null, arrays, and objects).

What common JSON errors does the validator detect?▼

BracketView detects: missing or extra commas, unquoted property names, single quotes instead of double quotes, trailing commas after last items, unclosed brackets or braces, invalid escape sequences, duplicate keys, and malformed values.

Is the JSON validator free to use?▼

Yes, BracketView JSON validator is completely free with no registration required. You can validate unlimited JSON data without any restrictions.

Is my JSON data secure?▼

Absolutely. All validation happens locally in your browser. Your JSON data never leaves your device, ensuring complete privacy and security.

Can I validate large JSON files?▼

Yes, BracketView can handle large JSON files efficiently. You can paste JSON directly or upload files from your computer for validation.

Ready to Validate Your JSON?

Start validating JSON instantly. No signup required.

Open JSON Validator