Blog · 2026-03-08

YAML ↔ JSON in config files: footguns and migration tips

Comments and anchor syntax make YAML pleasant — until implicit typing turns `no` into boolean false.

yamljsonconfig

Quote suspicious scalars

Country codes, version strings, and on/off knobs should be quoted so parsers do not reinterpret them.

Round-trip through canonical JSON

When migrating tooling, pretty-print JSON to spot duplicate keys and unexpected nulls removed by serializers.

Try these tools next

  • YAML to JSON — Convert YAML-like structures to JSON using a forgiving parser.
  • TOML to JSON — Client-side toml to json — runs locally in your browser for speed and privacy.
  • JSON Formatter — Beautify, validate, and minify JSON in the browser.

Back to all tools or browse the blog index.