informational guide · Updated 2026-08-12
JSON vs XML
Compare JSON and XML for APIs and configs. Learn when each format fits and how to format JSON on Utila.
Quick comparison
JSON is typically more compact and easier to map to objects in modern languages. XML is more verbose but supports schemas, attributes, and mixed content that some enterprise systems still require.
API trends
Most public HTTP APIs default to JSON today. Browser tooling, mobile clients, and documentation examples assume JSON unless stated otherwise.
When XML still wins
XML remains common in publishing, SOAP integrations, and document pipelines. Choosing a format is rarely about which is “better” universally—it is about what your counterpart expects.
Practical workflow
If you are debugging JSON, Utila’s formatter and validator help you inspect payloads quickly. Keep conversions intentional; naive JSON↔XML transforms can lose attributes or type fidelity.
Primary tool: JSON Formatter
