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DataToolings

GraphQL Playground

Write, format, and syntax-highlight GraphQL queries, mutations, subscriptions, and fragments. Validate structure and copy with one click.

Samples:

Editor

Highlighted Preview

query GetUser($id: ID!) {
  user(id: $id) {
    id
    name
    email
    posts {
      id
      title
      publishedAt
    }
  }
}

What Is GraphQL Playground?

A browser-based editor for writing, formatting, and validating GraphQL queries, mutations, subscriptions, and fragments. Get instant syntax highlighting and structural validation without connecting to a live endpoint — perfect for drafting queries before adding them to your application.

How to Use

  1. Type or paste a GraphQL query into the editor
  2. Click Format to auto-indent and clean up your query
  3. The highlighted preview shows keywords, variables, and directives in colour
  4. Use the sample buttons to load common operation templates

Features

  • Syntax highlighting: keywords, variables ($), directives (@), strings, comments
  • Auto-formatter with consistent indentation
  • Structural validation — detects unbalanced braces and parentheses
  • Sample templates for query, mutation, subscription, and fragment
  • Copy formatted query with one click
  • 100% client-side — no server, no network requests

Frequently Asked Questions

Can I execute queries against a live GraphQL endpoint?

This tool is a query editor and formatter only — it does not send requests to any server. To execute live queries, use the GraphQL endpoint's built-in Explorer or a tool like Insomnia or Postman.

What does the validation check?

The validator checks structural correctness: balanced braces and parentheses. Full semantic validation (field names, types, schema compliance) requires a live schema and is out of scope for a client-side tool.

What is a GraphQL fragment?

A fragment is a reusable selection set you can spread into multiple queries with ...FragmentName. It helps avoid duplicating the same field list across operations.