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GraphQL Formatter & Validator – Clean Queries, Mutations & SDL

Apply Prettier-style formatting, syntax validation, and optional minification to GraphQL operations and schema definitions with detailed error reporting.

🟢 Runs locally · no uploads

Mode

Format GraphQL queries, mutations, and schemas with customizable options

lightbulbPopular Use Cases

api
API Query Formatting

Format GraphQL API queries for better readability and debugging

schema
Schema Definition

Beautify GraphQL schemas and type definitions for documentation

edit
Mutation Development

Format complex mutations with nested inputs and custom types

compress
Query Minification

Compress GraphQL queries for production deployments to reduce payload size

Example Queries

Format Options

Customize formatting preferences

Add spaces inside object brackets

GraphQL Input
Syntax: graphql

How to Use

  • Format Mode: Beautify GraphQL with customizable indentation and line length
  • Validate Mode: Check syntax and see detailed error messages with line numbers
  • Minify Mode: Compress queries for production by removing whitespace
  • Click example queries to quickly test different GraphQL operations
  • All processing happens in your browser - your queries never leave your device

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› About this tool · FAQ

Format, validate, and minify GraphQL queries, mutations, subscriptions, and schema definitions. Supports syntax validation, auto-formatting with customizable options, and error detection for GraphQL operations.