Convert Protobuf message definitions to TypeScript interfaces and JSON samples. Everything runs locally in your browser — nothing is uploaded.
Convert GraphQL schema definitions to JSON Schema format. Bridge the gap between GraphQL and REST tooling ecosystems.
Generate a JSON Schema (draft-07) from sample JSON data. Auto-detect types, required fields, and nested structures.
Generate Apache Avro schemas from a JSON field definition. Configure namespace, record name, and field types — outputs valid Avro schema JSON.
Generate type definitions from JSON for TypeScript, Java, C#, Python, Go, Rust, and Kotlin. Everything runs locally in your browser — nothing is uploaded.
Convert messy CSV or Excel sheets from clients into clean JSON in one batch. Handles missing values, nested rows, and generates strict JSON schemas for 50+ files at once. Everything runs locally in your browser — nothing is uploaded.
Proto Schema Converter lets you convert Protobuf message definitions to TypeScript interfaces and JSON samples. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Convert Protobuf message definitions to TypeScript interfaces and JSON samples. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Paste or type your content directly into the provided text area.
Yes. After the initial page load, Proto Schema Converter runs entirely on your device with no internet connection needed. All processing is done locally.
Convert Protobuf message definitions to TypeScript interfaces and JSON samples. All processing runs locally — no code is sent to any server.
Tools cover JavaScript, CSS, HTML, SQL, Python, JSON, XML, CSV, and more. Check the tool description for specifics.
Yes. Since processing is local, performance depends on your device. Most operations handle large files without issue.
Yes. Formatters use well-known libraries (sql-formatter, Prettier-compatible patterns) and follow widely adopted rules.
JSON Formatter
Pretty-prints raw JSON with configurable indent width, key sorting, and bracket collapsing options while flagging syntax errors with exact.
TypeScript Formatter
Auto-format TypeScript code with consistent indentation and line breaks.
Protobuf Decoder
Decode protobuf wire format hex bytes into readable field structure. Shows field numbers, wire types, varints, strings, nested messages, and raw hex.