When JSON wins
JSON is usually the better choice for modern APIs, browser apps, and quick data exchange. It is compact, readable, and maps naturally to objects and arrays in common programming languages.
{
"user": {
"id": 42,
"name": "Ada"
}
}When XML still makes sense
XML is more verbose, but it still matters in standards-based ecosystems, older enterprise systems, and document-heavy integrations. Namespaces and attributes remain useful in some workflows.
<user id="42"> <name>Ada</name> </user>
How to choose
- Choose JSON for modern apps and APIs.
- Choose XML when the system already expects it.
- Convert between them when you need to bridge old and new workflows.