MMaxTools

YAML Converter

Convert between YAML and JSON in both directions.

The YAML Converter translates between YAML and JSON in either direction. Convert JSON from an API into YAML for config files, or parse a YAML manifest back into JSON for scripts and jq pipelines.

YAML is the config language of the cloud-native world — Docker Compose, GitHub Actions, Kubernetes manifests and CI pipelines all speak it — while JSON remains the lingua franca of APIs. Moving between the two is a daily task for anyone touching both.

Conversion preserves data faithfully (keys, nesting, numbers, booleans, arrays and nulls). YAML constructs with no JSON equivalent — anchors, aliases and custom types — are resolved to their final values on the way to JSON. All parsing happens locally in your browser.

YAML output

name: MaxTools
version: 2
free: true
tools:
  - calculator
  - converter
  - dev
meta:
  owner: indie
  ads: true

YAML is JSON's indentation-loving cousin — config files everywhere (Docker, CI, k8s) speak it. Note YAML can express things JSON cannot (anchors, custom types); those convert to their resolved values.

How to use the YAML Converter

  1. Choose the direction: JSON → YAML or YAML → JSON.
  2. Paste the source text.
  3. Read the converted output.
  4. Copy the result.
  5. Fix any syntax errors the validator flags before copying.

Frequently asked questions

Why would I convert JSON to YAML?

Config files in Docker, CI systems and Kubernetes are written in YAML because indentation reads better for humans than braces. Converting an API response into that shape is a frequent need.

Why would I convert YAML to JSON?

Scripts, jq, and many programming tools consume JSON natively. Parsing a YAML manifest to JSON makes it easy to query, transform or feed into tools that never learned YAML.

Are there data types YAML has that JSON does not?

YAML adds anchors/aliases and tags; both resolve to plain values (dates become strings or timestamps depending on the parser). The converter uses standard 1.2-style resolution, so round trips stay predictable.

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