Jsonpretty

Jsonpretty is a family of software components that render JSON data in a readable, formatted form. It includes command-line tools, library modules, and online services designed to convert compact JSON into an organized, human-readable representation. While the specifics vary by implementation, the core goal is to improve readability and reduce cognitive load when inspecting JSON data.

Core features commonly offered include configurable indentation levels (such as 2 or 4 spaces), wrapping behavior, and optional syntax highlighting for terminals. Many tools support both pretty-printed output and minified output, offering options for streaming processing to handle large files, and robust error reporting for invalid JSON. Some implementations also provide validation against JSON Schema or support streaming JSON formats such as NDJSON, formatting one line or object at a time.

Interfaces typically include a command-line interface that accepts input from a file or standard input, with flags to control indentation, colorization, and output width. Library bindings expose a formatting function that takes a JSON value and returns a pretty-printed string, enabling integration into applications. Developer ecosystems host jsonpretty variants across languages such as JavaScript, Python, Go, and Rust, often with separate packages or modules for CLI and library use.

History and ecosystem: jsonpretty is a generic label rather than a single canonical project. Over time, multiple independent projects have adopted similar names or functionality, resulting in a diverse ecosystem of language-specific implementations and tooling.

See also: JSON, Pretty printing, JSON formatter, Code formatting tools.