⇄ YAML ↔ JSON Converter

Convert between YAML and JSON instantly. Handles anchors, multiline strings, nulls, and all YAML types.

🔒 Runs entirely in your browser — nothing is sent to any server
Input YAML
 
Output JSON
 

🟡 When to use YAML

⚙️
Config filesDocker Compose, Kubernetes manifests, GitHub Actions, Ansible — all use YAML for its readability and comment support.
📝
Human-edited filesYAML is easier to write by hand — no quotes around keys, no commas, and you can add # comments.
🔗
Anchors & aliasesYAML lets you define a block once with &anchor and reuse it with *alias — great for DRY configs.

🔵 When to use JSON

🌐
APIs & webREST APIs, fetch responses, localStorage — JSON is the universal data exchange format for the web.
📦
Package configspackage.json, tsconfig.json, VS Code settings — tooling configs that are machine-read use JSON.
⚡
Programmatic useJSON is faster to parse in most runtimes and has native browser support — no library needed.