JSON Verisini Adım Adım Formatlama ve Doğrulama
Quick Answer
JSON formatlamak için: JSON'unuzu JSON Formatter'a yapıştırın ve doğru indent ile beautified output anında görünür. Doğrulamak için: araç otomatik syntax kontrol eder ve geçersizse hata konumu gösterir. Tüm işleme yerel olarak olur.
Introduction
JSON (JavaScript Object Notation), web API'leri ve konfigürasyon dosyaları için en yaygın veri formatıdır. API'lerden gelen ham JSON genelde tek satıra minify edilir, bu da okunmasını zorlaştırır. Formatlama (beautifying veya pretty-printing de denir) indent ve satır sonu ekler. Validation, JSON syntax'inin doğru olup olmadığını kontrol eder —tek yanlış yerleştirilmiş virgül tüm uygulamanızı bozabilir.
Step by Step
-
Open the JSON Formatter tool
Go to the JSON Formatter tool page. The tool accepts any JSON string as input — objects, arrays, or nested structures.
-
Paste your JSON data
Paste the JSON you want to format or validate into the input textarea. This could be an API response, a config file, or a JSON string from your code.
-
Review the formatted output
The tool parses your JSON and re-serializes it with 2-space indentation and line breaks. The formatted output appears instantly in the result field. If the JSON is invalid, an error message appears with the location of the syntax problem.
-
Check validation status
If the JSON is valid, the tool shows a success indicator and the formatted output. If invalid, it displays the parse error — such as 'Unexpected token at position 42' — so you can fix the syntax issue in your source.
-
Copy or minify the result
Use the Copy button to copy the formatted JSON to your clipboard. Some tools also offer a Minify button to remove all whitespace — useful for reducing payload size in production.
Examples
Format minified JSON
Input: {"name":"Alice","age":30,"roles":["admin","user"]}
Output: {
"name": "Alice",
"age": 30,
"roles": ["admin", "user"]
}
Detect invalid JSON (trailing comma)
Input: {"a":1,"b":2,}
Output: Error: Unexpected token } at position 11
Detect invalid JSON (single quotes)
Input: {'name':'Alice'}
Output: Error: Unexpected token ' at position 1
Common Problems
- Using single quotes for strings —JSON requires double quotes for all strings and keys.
- Trailing commas after the last item —JSON does not allow a comma before } or ].
- Comments in JSON —standard JSON does not support // or /* */ comments. Use JSONC or JSON5 if you need comments.
- Unquoted keys —unlike JavaScript object literals, JSON requires all keys to be in double quotes.
- Undefined, NaN, or Infinity values —JSON only supports null, not undefined or NaN.
Tips
- Always validate JSON before sending it in an API request —a syntax error can cause a 400 Bad Request response.
- Use minified JSON in production to save bandwidth, and formatted JSON in development for readability.
- JSON does not support Date objects —serialize dates as ISO 8601 strings (e.g., "2026-09-02T00:00:00Z").
- Use JSON.parse() in JavaScript to convert a JSON string to an object, and JSON.stringify() to convert an object to a JSON string.