Enter a Schema and click "Parse Schema" to view type structure
GraphQL is an API query language and runtime open-sourced by Facebook in 2015. It allows clients to precisely specify the data they need, avoiding the common over-fetching and under-fetching problems of REST APIs. GraphQL uses a strong type system to define data structures and supports three operation types: Query, Mutation, and Subscription.
GraphQL is an API query language developed by Facebook that allows clients to precisely specify the data they need, avoiding over-fetching or under-fetching. Unlike REST, GraphQL uses a single endpoint and defines data structure through a type system, supporting nested queries and real-time subscriptions.
Key differences: 1) GraphQL single endpoint vs REST multiple endpoints; 2) GraphQL client specifies data vs REST server-fixed responses; 3) GraphQL strong type system vs REST no type constraints; 4) GraphQL avoids over-fetching vs REST often returns excess data; 5) GraphQL supports nested queries vs REST requires multiple requests.
A Schema is GraphQL's type system definition, describing all data types, queries, and mutation operations supported by the API. It's written in Schema Definition Language (SDL) and contains three root types: Query (read), Mutation (write), and Subscription (real-time).
This tool automatically formats GraphQL queries to standards: consistent 2-space indentation, one field per line, standardized brace placement, and organized arguments and directives.
No. All GraphQL parsing and formatting happens locally in your browser. Your Schema and queries are never sent to any server.