Convert Protocol Buffer .proto definitions to JSON Schema and back — bridge gRPC APIs and JSON tooling for docs, validators, and gRPC tests. Code never leaves your device — formatting and validation run locally in your browser.
Content reviewed October 2026 · About Toolzum
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.
Build JSON-RPC 2.0 request envelopes with method, params, and IDs. Talk to Ethereum nodes and RPC APIs correctly — local building, free, no signup.
Generate JSON Server configuration files from endpoint definitions. Set up a fully functional mock API server in seconds.
Convert INI files to JSON objects and back — legacy configs to modern tooling. Migrate .ini without hand-editing — local parsing, free, no signup.
Convert TOON back to standard JSON for tooling compatibility. Return from token-efficient form losslessly — local conversion, free, no signup.
Both — .proto definitions to JSON Schema and back in one tool.
Protocol Buffers interfaces — compact typed contracts for gRPC APIs.
Bridge gRPC services with JSON tooling — docs, validators, and tests.
No — conversion runs locally in your browser, free with no signup.
JSON Formatter
Pretty-prints raw JSON with configurable indent width, key sorting, and bracket collapsing options while flagging syntax errors with exact.
TypeScript Formatter
Format TypeScript with correct indentation, type-annotation spacing, and interface alignment. Clean up 500-line components before review — local processing, free, no signup.
Protobuf Decoder
Decode protobuf wire format hex bytes into readable field structure. Shows field numbers, wire types, varints, strings, nested messages, and raw hex.