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GraphQL Formatter - Free Online GraphQL Beautifier

Format and beautify your GraphQL queries online for free. Properly indent and structure your GraphQL code with one click.

What is GraphQL Formatter?

GraphQL is a query language for APIs developed by Facebook (now Meta) that allows clients to request exactly the data they need. Unlike REST APIs where each endpoint returns a fixed data structure, GraphQL lets you specify the shape of the response in your query. A GraphQL formatter (also called a beautifier or pretty printer) takes compressed, minified, or poorly indented GraphQL code and restructures it with consistent indentation, proper line breaks, and clear nesting. This makes queries, mutations, subscriptions, and schema definitions much easier to read and debug. Formatting is essential when working with complex nested queries, reviewing code in pull requests, or documenting API usage. Minified GraphQL queries save bandwidth in production but are nearly impossible to read during development.

How to Use GraphQL Formatter

Paste your unformatted GraphQL query or schema into the input area. Click "Format" to automatically indent and beautify the code with proper nesting for queries, mutations, fragments, and type definitions. The formatted output appears instantly in the output area. Copy the result with one click or clear both fields to start over.

How GraphQL Formatter Works

The formatter parses your GraphQL input and rebuilds it with consistent formatting rules: • Opening braces ({) start a new indentation level on the same line • Each field, argument, and directive gets its own line • Closing braces (}) align with the opening statement • Nested selections are indented consistently (2 spaces per level) • Arguments and variables are formatted inline for short lists, or one-per-line for longer ones • Comments are preserved in their relative positions The formatter handles queries, mutations, subscriptions, fragments, type definitions, input types, enums, and interfaces. It does not modify the semantic meaning of your GraphQL — the formatted output is functionally identical to the input.

Common Use Cases

  • Cleaning up minified GraphQL queries copied from network inspector or browser DevTools
  • Formatting queries before pasting them into documentation or README files
  • Making GraphQL schemas readable for code reviews and pull requests
  • Standardizing query formatting across team members in collaborative projects
  • Debugging deeply nested GraphQL queries by visualizing the structure clearly
  • Preparing GraphQL examples for blog posts, tutorials, or technical presentations

Frequently Asked Questions

What does this GraphQL formatter do?

It takes minified or poorly formatted GraphQL queries and schemas, and reformats them with proper indentation and line breaks for improved readability. The formatted output is functionally identical to your input.

Does it validate my GraphQL syntax?

This tool focuses on formatting, not validation. It handles standard GraphQL syntax and produces well-formatted output. For syntax validation, use a dedicated GraphQL linter or your API playground.

Can I format GraphQL schemas, not just queries?

Yes. The formatter handles all GraphQL constructs including type definitions, input types, enums, interfaces, unions, and directives, in addition to queries, mutations, and subscriptions.

What indentation style does it use?

The formatter uses 2-space indentation by default, which is the most common convention in the GraphQL community. Each nesting level adds 2 additional spaces.

Does it handle GraphQL fragments?

Yes. Fragment definitions and fragment spreads (...FragmentName) are formatted correctly with proper indentation of their selection sets.

Can I format multiple queries at once?

You can paste multiple named operations (queries, mutations) in a single input and the formatter will handle them all, formatting each operation with proper spacing between them.

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