JSON vs XML: When to Use Each Format
Compare JSON and XML data formats — strengths, weaknesses, and real-world use cases.
JSON and XML are both structured data formats, but they serve different ecosystems. JSON dominates modern web APIs. XML remains strong in enterprise, document markup, and legacy systems.
Choose JSON when
- Building REST APIs or GraphQL services
- Working with JavaScript, Python, or mobile apps
- Data is relatively flat or moderately nested
- File size and parsing speed matter
- Human readability is important
Choose XML when
- Working with SOAP web services
- Processing RSS feeds or SVG graphics
- Enterprise systems requiring schema validation (XSD)
- Document markup with mixed content
- Legacy system integration
YAML as an alternative
YAML is increasingly popular for configuration files (Kubernetes, Docker, CI/CD) because it is more human-readable than JSON while supporting the same data structures.
Convert YAML to JSON →