📂 Import Schema
Drag .graphql file here
Parse SDL format schema definitions, visualize types, queries, mutations, and subscriptions
Zero Dependencies · Works OfflineThe GraphQL Schema Viewer is a free online developer tool for parsing and visualizing GraphQL Schema definitions. Supports SDL (Schema Definition Language) format input, automatically identifying all type definitions including Object Type, Query, Mutation, Subscription, Enum, Input Type, Interface, and Scalar. After parsing, it displays type structures and field information in intuitive card format with search filtering and category browsing.
1. Paste GraphQL Schema SDL content in the text box, or drag a .graphql file to import.
2. Click "Parse" to automatically identify all type definitions.
3. View type counts in the stats section. Use category tags to filter specific types.
4. Click type cards to expand and view full field lists, arguments, and descriptions.
5. Use the search box to quickly find types or fields. Ctrl+Enter to parse, Ctrl+Shift+C to copy results.
Frontend developers quickly browse Schema definitions before integrating GraphQL APIs, understanding available queries and type structures.
Backend teams visually check type relationships and field definitions when designing GraphQL Schemas, ensuring sound design.
Beginners parse example Schemas to intuitively understand GraphQL's type system, query entry points, and data relationships.
Developers compare old and new Schemas by quickly viewing type changes, confirming field additions/deletions and type modifications.
The GraphQL Schema is the core of a GraphQL API, defining the type system and operation entry points. SDL is GraphQL's type definition language using concise text syntax. Schemas contain three root operation types: Query (read data), Mutation (modify data), and Subscription (real-time updates). The type system supports Object Type, Interface, Union, Enum, Input Type, and Scalar. Fields can have arguments, ! marks non-null types, and [Type] denotes list types. Introspection queries allow clients to retrieve Schema information at runtime.
A GraphQL Schema is the API's type definition using SDL to describe data types, query entry points, mutations, and subscriptions as the client-server contract.
SDL is GraphQL's type definition language using concise text syntax, e.g., type User { id: ID! name: String! }.
All standard types: Object Type, Interface, Union, Enum, Input Type, Scalar, and Query/Mutation/Subscription root types.
Completely safe. All parsing and display runs locally in your browser. No data is uploaded.
Click a type card to expand details showing fields, arguments, return types, and descriptions.
Yes. Type a type name or field name in the search box for real-time filtering.
Yes. Drag a .graphql file onto the editor area to auto-parse.