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Document format · .yaml

YAML: what it’s for

YAML is the configuration language of Docker, Kubernetes, and CI pipelines: indentation-based, comment-friendly, and far more readable than JSON for settings. Convert YAML to JSON for APIs, or format and validate it before a deploy breaks.

Strengths

  • Human-readable configs with comments — JSON has neither
  • Native to Docker Compose, Kubernetes, and GitHub Actions
  • Anchors and aliases kill copy-paste across environments
  • Our tools convert YAML to JSON and back locally

Honest limits

  • Indentation is load-bearing — one stray tab breaks the deploy
  • Tabs are forbidden; spaces only, and linters will fight you
  • No schema standard as universal as XML Schema or JSON Schema
  • Large YAML parses slower than equivalent JSON

Free YAML tools

Every tool runs in your browser — files never leave your device. Badges say exactly what each tool does with YAML.

YAML FAQs

How do I convert YAML to JSON?

Use the YAML-JSON converter — bidirectional, with auto-format detection and live preview, all local. Handy for turning Compose files into API payloads.

Why does my YAML fail to deploy?

Almost always indentation — tabs instead of spaces, or a misaligned key. Run it through the YAML validator, then the formatter, before pushing.

YAML or JSON for configs?

YAML for anything humans edit (Compose, pipelines, Kubernetes); JSON for machine-to-machine APIs. Convert freely between them.

Is YAML conversion private?

Completely. Parsing and conversion run in your browser; configs never upload.