common.dev
2026-03-18
DevTools Team
JSON vs XML: Which One Should You Choose?
JSON and XML are the two most common formats for exchanging data between servers and web applications. While both serve a similar purpose, they have distinct differences.
JSON (JavaScript Object Notation)
JSON is lightweight, easy for humans to read and write, and easy for machines to parse. It has become the de facto standard for web APIs.
- Pros: Less verbose, faster to parse, native support in JavaScript.
- Cons: No built-in support for comments or complex metadata.
XML (eXtensible Markup Language)
XML is more verbose but offers more features, such as schemas for validation and support for mixed content.
- Pros: Highly extensible, supports complex document structures, strong validation.
- Cons: Heavier payload, more complex to parse.
Which to Choose?
For most modern web APIs, JSON is the preferred choice due to its simplicity and performance. However, XML is still widely used in enterprise systems and for complex document-oriented data.