JSON vs XML

JSON replaced XML for most web APIs, but XML is still alive in enterprise, RSS, SOAP, and configuration files.

JSON

Lightweight data format native to JavaScript, dominant in modern APIs.

Visit JSON

XML

Verbose, tag-based data format used in enterprise systems, RSS, and SOAP.

Visit XML

Feature Comparison

FeatureJSONXML
File sizeCompact — no closing tagsVerbose — opening and closing tags
ReadabilityEasy — key/value pairsModerate — tag nesting
CommentsNot supportedYes — full comment support
Schema / validationJSON SchemaXSD (XML Schema) — more powerful
Modern API useDominant — REST, GraphQLLegacy — SOAP, RSS, SOAP

Verdict

JSON wins for web APIs — it's lighter and native to JavaScript. XML wins for enterprise, configuration, and document standards. Format and validate JSON with our free tool.

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Frequently Asked Questions

What is the difference between JSON and XML?

JSON replaced XML for most web APIs, but XML is still alive in enterprise, RSS, SOAP, and configuration files. On the points that matter most: File size — JSON: Compact — no closing tags; XML: Verbose — opening and closing tags. Readability — JSON: Easy — key/value pairs; XML: Moderate — tag nesting. Comments — JSON: Not supported; XML: Yes — full comment support.

Is JSON better than XML?

JSON wins for web APIs — it's lighter and native to JavaScript. XML wins for enterprise, configuration, and document standards. Format and validate JSON with our free tool. If you mainly need the core feature without a subscription or signup, Free JSON Formatter is a free alternative to both.

Is there a free alternative to both JSON and XML?

Yes — our Free JSON Formatter is completely free with no account required.

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