About GraphQL Formatter

Format and beautify your GraphQL queries and schemas with this free online tool. Make your GraphQL code easy to read with proper indentation and syntax highlighting

Format GraphQL queries, mutations, subscriptions, fragments, and schema definitions into a readable hierarchy.

Key features

  • Formatting purpose Format GraphQL queries, mutations, subscriptions, fragments, and schema definitions into a readable hierarchy.
  • Supported source Paste a GraphQL operation or SDL document with fields, arguments, directives, variables, and fragments.
  • Style controls Set indentation if available; the parser uses GraphQL syntax to place selections and definitions on consistent lines.
  • Formatted result The output can be copied into clients, API documentation, tests, or schema repositories.

How to use GraphQL Formatter

Follow this workflow to work with GraphQL documents safely and accurately.

  1. Paste or enter the source Paste a GraphQL operation or SDL document with fields, arguments, directives, variables, and fragments.
  2. Choose formatting rules Set indentation if available; the parser uses GraphQL syntax to place selections and definitions on consistent lines.
  3. Format the source Run the formatter after the source parses successfully. It will apply presentation rules without intentionally changing the parsed structure.
  4. Review and copy The output can be copied into clients, API documentation, tests, or schema repositories.

Usage tips

  • Remove HTTP wrapper JSON and paste only the GraphQL document when the formatter expects GraphQL syntax.
  • Keep fragment names and variable definitions consistent; formatting will not resolve missing references.
  • Validate the formatted operation against the target schema to catch unknown fields and type mismatches.

Frequently asked questions

Format GraphQL queries, mutations, subscriptions, fragments, and schema definitions into a readable hierarchy.
Paste a GraphQL operation or SDL document with fields, arguments, directives, variables, and fragments.
Set indentation if available; the parser uses GraphQL syntax to place selections and definitions on consistent lines.
Syntactically valid GraphQL can still be invalid for a particular API schema, authorization policy, or server implementation.