GraphQL Query Formatter — Mutation & Subscription Tool
Format and prettify GraphQL queries, mutations, subscriptions, and fragments with correct indentation.
How to Use GraphQL Query Formatter — Mutation & Subscription Tool
How to Use the GraphQL Query Formatter
Step 1: Paste Your Query
Paste any GraphQL operation into the left textarea. This can be a query, mutation, subscription, or fragment definition. Minified one-liners, partially formatted code, and multi-operation documents are all supported.
Step 2: Choose Indent Size
Use the Indent selector in the top-right corner of the input panel to choose between 2 spaces (default) or 4 spaces. This controls how deeply nested fields and selections are indented in the output.
Step 3: Load an Example (optional)
Click one of the example buttons below the textarea to load a pre-built query:
- Simple Query — a basic query with a field argument
- With Variables — a query using
$variables, a directive (@include), and nested selections - Mutation — a mutation with an input variable
- With Fragments — fragment definitions and spreads across multiple operations
- Subscription — a subscription operation
Step 4: Click Format Query
Click the Format Query button. The formatted output appears in the right panel with correct indentation and each field on its own line.
Step 5: Copy or Download
Use the Copy button to copy the formatted query to your clipboard, or click .graphql to download the result as a formatted.graphql file.
What the Formatter Does
- Places each selected field on its own line
- Indents nested selection sets by the chosen indent size
- Keeps field arguments
(arg: value)inline with the field name - Keeps variable definitions
($id: ID!)inline with the operation name - Formats fragment spreads (
...FragmentName) and inline fragments (... on Type) as separate lines - Preserves directives (
@include,@deprecated) inline with their field - Preserves string literals and comments without modification
Limitations
The formatter is a lightweight token-based prettifier, not a full GraphQL parser. It does not validate the query structure or check types. For full GraphQL spec compliance and error checking, use the GraphQL Schema Validator or an official GraphQL library.
Frequently Asked Questions
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