About the GraphQL Query Formatter
GraphQL queries and mutations can get deeply nested very quickly, and a query copied from a network request or generated by tooling is often collapsed onto a single line, making it nearly impossible to read at a glance. This GraphQL Query Formatter reformats any query, mutation, or fragment with consistent indentation and line breaks based on brace nesting, so the structure of your request becomes immediately clear.
This tool is useful for frontend developers debugging GraphQL requests captured from browser dev tools, backend developers reviewing incoming queries for a GraphQL API, and students learning how nested GraphQL selection sets are structured.
To use it, paste your GraphQL query or mutation into the input box and click "Format." The formatter tracks opening and closing braces and parentheses to apply correct indentation at every nesting level, placing each field and argument on its own line for maximum readability, while preserving the query's logic exactly as written.
For example, a minified query like query{user(id:1){name email posts{title comments{text}}}} is reformatted into a clearly indented structure showing the user query, its arguments, and each nested selection set (posts, and comments within posts) on progressively indented lines — making it obvious at a glance how deep the query actually reaches and exactly which fields are being requested at each level.
A common mistake when working with deeply nested GraphQL queries is losing track of which closing brace matches which opening field, leading to structural errors that are hard to spot in a single-line query. Formatting first makes these mismatches visually obvious. Another useful habit is formatting a query before adding it to version control or sharing it in a code review, since a well-formatted GraphQL query is much easier for a reviewer to reason about than a compressed one-liner.
Tip: after formatting a complex query, use it alongside your GraphQL schema documentation to double-check that every requested field actually exists on the corresponding type — formatting reveals structure, but doesn't validate the query against a schema, so combine this tool with your GraphQL client's built-in validation or a schema-aware IDE plugin for full confidence before shipping a query to production.