JSON Tools
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Base64
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What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format that is easy for humans to read and write, and easy for machines to parse and generate. It is widely used for transmitting data between a web server and a web application.
JSON is language-independent and is supported by most programming languages, making it the go-to format for APIs and data storage.
JSON Structure
Data Types
- ✓ String - Text in quotes
- ✓ Number - Integer or decimal
- ✓ Boolean - true or false
- ✓ Array - Ordered list
- ✓ Object - Key-value pairs
- ✓ null - Empty value
Example
{
"name": "John",
"age": 30,
"isDeveloper": true,
"skills": ["JS", "Python"],
"address": {
"city": "NYC"
}
}Common JSON Errors
Missing Comma
Forgot comma between properties
Fix: Add "," after each property except the last
Trailing Comma
Extra comma at end of array/object
Fix: Remove the last comma before } or ]
Unquoted Keys
Keys must be in double quotes
Fix: Wrap all keys in double quotes: "key"
Single Quotes
Values must use double quotes
Fix: Use "value" not 'value'
Trailing Characters
Invalid characters after closing bracket
Fix: Remove any text after } or ]
Unescaped Characters
Special chars in strings must be escaped
Fix: Use \" for quotes, \\ for backslash
Tips for Working with JSON
Validate Before Use
Always validate JSON before sending to API
Minify for Production
Use minified JSON to reduce file size
Pretty Print for Debug
Format JSON to easily spot errors
Use Schema Validation
Validate structure with JSON Schema