GraphQL Query Formatter
GraphQL Query Formatter: Tokenizes GraphQL lexical grammar and applies consistent 2-space indentation with nested bracket alignments.
About this graphql query formatter
GraphQL Query Formatter — browser-based utility.
How this tool works
Implements client-side GraphQL Query Formatter operations. Tokenizes GraphQL lexical grammar and applies consistent 2-space indentation with nested bracket alignments specifically designed for a graphql developer cleans and formats an unindented graphql query document.
- Document Lexical Analysis: Tokenizes GraphQL operations, directives, arguments, variables, and comments.
- AST Construction & Fragment Validation: Resolves fragment spreads, verifies balanced braces, and validates variable type declarations.
- Pretty-Printing & Formatting: Applies 2-space indentation and normalizes comma-separated vs whitespace-separated argument lists.
- Schema Type Emission: Emits corresponding TypeScript interfaces or Protobuf message definitions.
Worked example
Scenario: A GraphQL developer cleans and formats an unindented GraphQL query document.
Sample input:
Processing: Tokenizes GraphQL lexical grammar and applies consistent 2-space indentation with nested bracket alignments.
Illustrative output:
Limits and verification
Enforces strict GraphQL grammar: rejects unclosed brackets, missing variable types, or illegal punctuation. Protobuf parsing supports proto3 syntax; proto2 extensions are flagged with compatibility warnings.
Examples demonstrate an expected workflow; they do not prove every input or every branch of an external specification. Check important results with an independent source before using them for money, security, compliance, safety, or irreversible file changes.
Browser processing boundary
Tool input is processed by code running in the browser and is not intentionally sent to a CZOA processing API. The page can still request ordinary site assets, analytics, or advertising when those services are enabled. Browser extensions and managed-device software remain outside this tool's control.
Relevant references
These references govern or help explain the format, protocol, or calculation used here. Listing a reference does not claim certification or complete implementation of every optional feature.
Content owner: CZOA Tools · Last reviewed: 2026-09-15 · Review methodology
How to use it
- Enter, paste, or select your input data into the GraphQL Query Formatter workspace controls.
- Review available parameter fields, units, formats, or options configured for your task.
- Click the action button or observe immediate live calculations rendered in your browser runtime.
- Inspect the resulting output and any diagnostic messages, then copy or download the result if needed.
Frequently asked questions
How does GraphQL Formatter lay out a document?+
It trims the submitted text, tracks curly-brace nesting and parentheses, preserves quoted strings and escapes, normalizes ordinary whitespace, and indents each pushed selection line by two spaces per brace depth.
What did the formatter browser fixture verify?+
The input query { user { id email } } became four lines: query {, an indented user { line, an indented id email line, and matching closing braces. The fixture covers that brace-only query.
Which GraphQL grammar cases are not validated?+
This is a text formatter, not a GraphQL parser or schema validator. It does not check operation names, variables, fragments, directives, field existence, argument types, comments, block strings, balanced braces, or server execution.
Does formatted output change query behavior?+
No behavior is executed. The page returns rearranged source text only; authorization, variables, transport JSON, endpoint reachability, schema evolution, and response semantics remain outside the formatter.