JSON to YAML and YAML to JSON, Both Ways

JSON and YAML represent the same underlying data — objects, arrays, strings, numbers, booleans, and null — just with different syntax. This tool detects which one you pasted and converts it to the other, so you don't need to run two separate tools depending on direction.

Features:

• JSON → YAML: Turn a JSON payload into readable, indented YAML.
• YAML → JSON: Turn a YAML config file into strict JSON.
• Client-side only: Nothing you paste here is uploaded anywhere.

1. What Doesn't Survive the Round Trip

JSON has no comments, so converting YAML → JSON drops any # comments in the source. YAML also supports anchors and aliases (&name / *name) for reusing a block — these get expanded to their full value in the JSON output rather than preserved as references.

2. Same Data, Different Shape

JSON: {"name": "api", "port": 8080, "debug": false}
YAML: name: api
port: 8080
debug: false

3. When to Use Which

Reach for YAML in files a person edits directly — Docker Compose, CI pipelines, Kubernetes manifests — where comments and readability matter. Reach for JSON when a program is the primary consumer, or when you need strict, unambiguous parsing (JSON's grammar has far fewer edge cases than YAML's).