Languages Knowledge Base

JSON Developer Guide for Python, JavaScript, Java & C#

Learn how to parse, minify, validate, and format JSON in Python (json.dumps), JavaScript (JSON.parse), Java (Jackson/Gson), C# (System.Text.Json), Go, and Rust.

Native JSON Libraries across Modern Languages

Every major backend language provides native or standard libraries for serializing, parsing, and formatting JSON structures.

Language Snippets:

  • Python: Use json.dumps(data, indent=2) for pretty-printing.
  • JavaScript / Node.js: Use JSON.stringify(data, null, 2) for formatted output.
  • Java: Use Jackson's ObjectMapper().writerWithDefaultPrettyPrinter().
  • C# / .NET: Use JsonSerializer.Serialize(obj, new JsonSerializerOptions { WriteIndented = true }).
json
# Python JSON Pretty Print Example
import json

payload = {"name": "Alice", "role": "developer"}
pretty_json = json.dumps(payload, indent=2)
print(pretty_json)

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Frequently Asked Questions

How do I pretty print JSON in Python?

Pass indent=2 or indent=4 to the json.dumps() function.

How do I stringify JSON in Node.js with indentation?

Pass null and 2 as the second and third parameters to JSON.stringify().

Related JSON Topics & Reference Articles