JSON Formatter & Validator Tool: Fix, Format and Beautify Your JSON Code
Web Utility Labs
JSON Formatter & Validator
Format, validate, and beautify your JSON data. Paste your JSON below to instantly identify errors and improve readability.
JSON Validation Error
Need help? Check the JSON tips below or review the common JSON errors section.
Format & Beautify
Transform unreadable JSON into a clean, properly indented format with color highlighting for improved readability.
Validate JSON
Instantly check if your JSON is valid with detailed error reporting that pinpoints exactly where problems occur.
Minify JSON
Compress your JSON by removing all whitespace and unnecessary characters for smaller file sizes.
Convert & Transform
View your JSON structure clearly with proper indentation and perform various formatting transformations.
Common JSON Errors & How to Fix Them
Missing or Extra Commas
JSON objects and arrays require commas between elements, but not after the last element.
{
"name": "John",
"age": 30, // Extra comma!
}
{
"name": "John",
"age": 30
}
Unquoted Property Names
In JSON, all object property names must be enclosed in double quotes.
{
name: "John",
age: 30
}
{
"name": "John",
"age": 30
}
Single Quotes Instead of Double Quotes
JSON requires double quotes for strings, not single quotes.
{
"name": 'John',
"greeting": 'Hello!'
}
{
"name": "John",
"greeting": "Hello!"
}
Invalid Escape Sequences
When using special characters in strings, they must be properly escaped.
{
"path": "C:\Users\John"
}
{
"path": "C:\\Users\\John"
}
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