JSON to YAML — free online tool

What does this do?

YAML is a human-friendly serialization format used by Kubernetes manifests, Docker Compose, GitHub Actions, Ansible, and many config files. It supports the same data shape as JSON but with cleaner syntax. This converter handles every JSON value type, escapes reserved tokens, and emits literal block scalars for multi-line strings so newlines are preserved.

When to use it

• ▸Convert API responses into Kubernetes / Docker Compose configs
• ▸Translate `package.json` snippets to a CI workflow
• ▸Reformat JSON test fixtures as readable YAML
• ▸Migrate config files from JSON to YAML

Tip

Empty objects/arrays render as `{}` / `[]`. Strings containing colons, dashes, or YAML-reserved words like `null`, `true`, `yes`, `on` are automatically quoted. Multi-line strings use the `|` literal block scalar so line breaks are preserved exactly.

Example: API response → YAML config

{
  "name": "elefcode",
  "version": "1.0.0",
  "ports": [80, 443],
  "env": {
    "NODE_ENV": "production",
    "LOG_LEVEL": "info"
  },
  "tags": ["web", "api", "edge"]
}

name: elefcode
version: '1.0.0'
ports:
  - 80
  - 443
env:
  NODE_ENV: production
  LOG_LEVEL: info
tags:
  - web
  - api
  - edge