Generate type definitions from pasted JSON for TypeScript, Java, C#, Python, Go, Rust, and Kotlin (plus a TS interface flavor). Everything runs locally in your browser — nothing is uploaded.
Convert TOML configs to and from JSON/YAML — Cargo, pyproject, and app settings. Migrate Rust configs cleanly — local parsing, free, no signup.
Converts JSON files to XML format — APIs, configuration files, and data exchange between web services to enterprise systems, SOAP APIs, document formatting, and legacy integration pipelines.
Converts JSON files to CSV format — APIs, configuration files, and data exchange between web services to spreadsheets, database exports, and data imports. All conversion happens locally in your browser with no file size limits.
Generate .gitignore files by selecting languages, frameworks, and tools from a checklist — covers Node, Python, Java, Go, Rust, macOS, Windows, Linux, and popular IDEs. Supports negation patterns and custom rules.
Generate Zod validation schemas from sample JSON data. TypeScript runtime validation. Code never leaves your device — formatting and validation run locally in your browser.
TypeScript (interfaces/types), Java (POJO classes), C# (classes), Python (dataclasses/pydantic), Go (structs), Rust (structs), and Kotlin (data classes).
Nested objects generate separate type/class definitions for each level. Arrays of objects create array-typed fields with the correct element type.
Yes. Fields that can be null or missing in the JSON sample are marked as optional (nullable) in the generated types.
Only the root type name (default “Root”) plus the language tab — no casing, JSDoc, or interface-vs-type switches. Nulls become optional fields, empty arrays become any[], and nested objects generate separate types (array items get an Item suffix).
No. All generation happens locally in your browser. No JSON data is sent to any server.
Data Format Converter
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.
JSON to XML
Converts JSON files to XML format — APIs, configuration files, and data exchange between web services to enterprise systems, SOAP APIs, document formatting, and legacy integration pipelines.
Last updated October 2026