GraphQL Formatter

GraphQL queries use a declarative syntax where clients specify exactly the data they need. A well-formatted GraphQL query makes its structure immediately visible: the operation type (query, mutation, or subscription), the operation name, variables with their types, the selection set of requested fields, nested field selections for related data, fragments for reusable field selections, and directives (@include, @skip) for conditional field inclusion. Formatting conventions include: each field on its own line, consistent indentation for nested selections (typically 2 spaces), arguments aligned horizontally or vertically depending on count, fragment definitions separated from operations, and inline fragments with clear type conditions. The AllTools GraphQL Formatter parses and re-indents GraphQL operations, handling queries, mutations, subscriptions, fragments, and schema definitions. This is particularly useful when copying queries from browser DevTools network tabs (which often display them as single-line strings), debugging API requests where the query is embedded in JSON payloads, and reviewing queries generated by GraphQL code generators. All formatting runs locally in your browser — your queries, which may reference proprietary schema fields and contain sensitive variable values, never leave your device.

GraphQL has become a leading API paradigm alongside REST, particularly for applications with complex data requirements. GraphQL's key advantage is eliminating over-fetching (REST endpoints return all fields, GraphQL returns only requested fields) and under-fetching (REST often requires multiple requests for related data, GraphQL resolves relations in a single query). Major adopters include GitHub (whose v4 API is exclusively GraphQL), Shopify, Facebook, Twitter, and many modern SaaS platforms. Development workflows involving GraphQL frequently require query formatting: crafting queries in GraphiQL or Apollo Studio explorers, debugging failing queries by formatting the raw query string from error logs, reviewing queries in pull requests where formatting affects readability, and documenting API usage examples in technical documentation. Schema definition language (SDL) documents also benefit from formatting — type definitions, input types, enums, interfaces, and unions become more readable with consistent indentation and spacing. The AllTools formatter handles both operation documents and SDL schemas, producing clean output that adheres to common community formatting conventions.