JSON ↔ YAML Converter

Sample Templates

About JSON & YAML

JSON (JavaScript Object Notation) is a lightweight data format, widely used in APIs and configuration files.

YAML (YAML Ain't Markup Language) is a human-readable data serialization format, popular in DevOps and configuration management.

Common Use Cases
  • Kubernetes manifests
  • Docker Compose files
  • GitHub Actions workflows
  • Ansible playbooks
  • CI/CD configurations
  • OpenAPI/Swagger specs
YAML vs JSON
FeatureYAMLJSON
CommentsYesNo
ReadabilityHighMedium
Parsing SpeedSlowerFaster
Web APIsRareStandard

Online JSON to YAML Converter Tool

Convert between JSON and YAML formats instantly with our free online converter. Perfect for developers working with Kubernetes, Docker, CI/CD pipelines, and configuration management tools.

Why Convert Between JSON and YAML?

While JSON is the standard for web APIs and JavaScript applications, YAML is preferred for configuration files due to its readability. Many tools accept both formats, and being able to quickly convert between them streamlines development workflows.

Supported Features

  • Bidirectional conversion: JSON to YAML and YAML to JSON
  • Preserves nested structures and arrays
  • Customizable indentation for YAML output
  • Instant validation with error highlighting
  • Sample templates for common use cases

JSON/YAML Questions

JSON for APIs and strict data exchange. YAML for config files humans edit (Docker Compose, K8s, CI/CD). YAML has comments and is more readable; JSON has stricter parsing and fewer gotchas.

Sort of. YAML 1.2 is a superset of JSON — any valid JSON is valid YAML. But YAML adds features (comments, anchors, multiline strings) that JSON lacks.

Indentation (spaces only, no tabs). Unquoted yes/no becoming booleans. The infamous Norway problem (NO = false). Multiline strings needing special syntax (| or >). When in doubt, quote your strings.

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