JSON vs. YAML vs. TOML: Configs, APIs, Data
Compare JSON, YAML, and TOML for configs, APIs, and data transfer. Examine comments, multiline values, type safety, and ecosystem support.
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Tags: data, yaml, json
JSON vs. YAML vs. TOML: Pick the Right Format for Every Use Case Three formats dominate configuration and data exchange for developers: JSON, YAML, and TOML. Each has a distinct philosophy, and picking the wrong one creates real pain — YAML indentation bugs in CI pipelines, JSON configs without comments, TOML parsers that don't exist in your language. This guide compares all three across 11 dimensions so you can make an informed choice rather than defaulting to whatever's familiar. --- The Quick Answer JSON — machine-generated data, APIs, when strict parsing matters YAML — human-authored config, Kubernetes, GitHub Actions, Ansible TOML — application config (Rust's Cargo.toml, Python's pyproject.toml), clear semantics Now for the depth. --- Origins and Design Goals JSON (2001, Douglas…
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