Config
YAML vs JSON for Config Files
2026-05-24 · 4 min read
A plain-English look at when YAML helps, when JSON is safer, and why teams keep moving between both.
YAML favors readability
Large config files are often easier to scan in YAML because indentation and comments are familiar to humans.
That is why YAML remains common in CI systems and infrastructure tooling.
JSON favors strictness
JSON is more rigid, which can reduce ambiguity in machine-generated content.
If a system supports both, JSON is often safer when configs are generated automatically.
Choose based on authorship
If humans edit it often, YAML may be friendlier. If software produces it, JSON may be more reliable.
That is why teams often end up keeping both around.