Convert JSON objects to TOML configuration format with proper typing and section support. Everything runs locally in your browser.
Convert JSON objects to YAML format with proper key-value formatting and nested structure support. Everything runs locally in your browser.
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 realistic mock JSON from field specs — names, emails, dates, nested objects. Fill frontends before backends exist — local generation, free, no signup.
Generate JSON Server configuration files from endpoint definitions. Set up a fully functional mock API server in seconds.
TOML (Tom's Obvious Minimal Language) is a config file format used by Rust (Cargo.toml), Python (pyproject.toml), and other tools. It's more readable than JSON for configuration files.
Strings, numbers, booleans, arrays, and objects map directly. Nested objects become TOML sections ([section]). Arrays of objects become [[array-of-tables]].
Yes. Deeply nested JSON objects are converted to properly nested TOML sections. Arrays of objects are converted to TOML array-of-tables syntax.
Yes. The output is valid TOML that can be used directly in Cargo.toml, pyproject.toml, or any TOML-based configuration file.
No. All conversion happens locally in your browser. No JSON data is sent to any server.
TOML Converter
Convert TOML configs to and from JSON/YAML — Cargo, pyproject, and app settings. Migrate Rust configs cleanly — local parsing, free, no signup.
JSON to YAML Converter
Convert JSON objects to YAML format with proper key-value formatting and nested structure support. Everything runs locally in your browser.
Last updated October 2026