Convert GraphQL schema definitions to JSON Schema format. Bridge the gap between GraphQL and REST tooling ecosystems. Types map with validation preserved — free, local, no signup.
Content reviewed October 2026 · About Toolzum
Convert Protocol Buffer .proto definitions to JSON Schema and back — bridge gRPC APIs and JSON tooling for docs, validators, and gRPC tests.
Format GraphQL variables JSON with validation against query structure. Stop malformed-variables errors before sending — local processing, free, no signup.
Generate common HTTP headers for JSON, REST, and GraphQL APIs with correct Content-Type and authorization patterns. Code never leaves your device — formatting and validation run locally in your browser.
Convert data between JSON, CSV, XML, YAML, and TSV with structure preserved. Migrate configs across stacks without rewriting — local PapaParse/xml2js/yaml parsing, free, no signup.
Convert INI files to JSON objects and back — legacy configs to modern tooling. Migrate .ini without hand-editing — local parsing, free, no signup.
JSON Schema is used by OpenAPI, form validators, and REST API tools. Converting GraphQL schemas enables code generation, validation, and documentation in ecosystems that don't natively support GraphQL.
Scalar types, object types, interfaces, unions, enums, input types, non-null markers, and list types are mapped to their JSON Schema equivalents with appropriate type constraints.
Yes. Nested object types, recursive references, and deeply nested structures are correctly converted with JSON Schema's $ref mechanism for complex types.
Yes. The generated JSON Schema can be embedded in OpenAPI definitions, used with schema validators, or fed into code generators that consume JSON Schema.
No. All conversion happens locally in your browser. No schema data is sent to any server.
GraphQL Schema Validator
Validate GraphQL schema syntax and structure. Detect missing root types, unknown type references, and common schema issues.
JSON Formatter
Pretty-prints raw JSON with configurable indent width, key sorting, and bracket collapsing options while flagging syntax errors with exact.