yj ☆

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Description:
CLI to convert between YAML, TOML, JSON and HCL

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: cli converter yaml json toml hcl

Install: brew install yj

About:
Yj is a command-line interface tool designed for seamless conversion between various popular data serialization formats including YAML, TOML, JSON, and HCL. It provides a robust solution for developers needing to transform configuration files or data structures without relying on external interpreters or complex scripting. By handling format-specific nuances, it ensures data integrity and simplifies workflow integration.

Key Features:

Zero-dependency binary written in Go for high performance
Supports bidirectional conversion between YAML, TOML, JSON, and HCL
Preserves data types and structure during conversion
Simple, intuitive CLI for easy scripting and automation

Use Cases:

Converting configuration files between formats for different tools (e.g., Terraform HCL to JSON for programmatic use)
Standardizing data formats in CI/CD pipelines
Parsing YAML or TOML in environments where only JSON is supported

Alternatives:

yq – yq is primarily for querying and manipulating YAML/JSON, whereas yj focuses specifically on format conversion.
jo – jo creates JSON from the command line but does not support bidirectional conversion or other formats like HCL.

Version History

Detected	Version	Rev	Change	Commit
Sep 11, 2025 7:39pm		0	VERSION_BUMP	01bd0860
Sep 10, 2024 9:27pm		0	VERSION_BUMP	3ff1d536