Why would I convert JSON to YAML?

YAML is more human-readable than JSON and is the standard format for Kubernetes manifests, GitHub Actions, Docker Compose, and many CI/CD pipelines. Converting lets you use existing JSON configs in those ecosystems.

Does YAML support all JSON data types?

Yes. JSON's strings, numbers, booleans, null, arrays, and objects all map directly to YAML equivalents. No data is lost in conversion.

Will comments in my JSON be preserved?

No. Standard JSON does not support comments. If you use JSON5 or JSONC, strip the comments first before converting.

Why are some string values quoted in the YAML output?

The YAML serializer adds quotes when a value could be misread as another type — for example, "1.0" is quoted to prevent it from being parsed as a number, and "true" is quoted to prevent it from being parsed as a boolean.

Does this tool send my data to a server?

No. All conversion is performed entirely in the browser. Your data is never sent to any server.

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JSON to YAML Conversion

Convert JSON data to YAML format. Useful for config files, CI/CD settings, and other scenarios requiring YAML. Enter text or upload a file (up to 100KB) and see real-time conversion results.

JSON Input

YAML Output

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How to use

About this tool

Converts JSON strings to YAML.

How to use

Paste JSON; the YAML output can be copied.

Use cases

• Converting JSON to YAML for K8s/CI • Config format conversion • Readability

Code Examples

JSON input example (before)

Read Only

1{
2  "name": "my-app",
3  "version": "1.0.0",
4  "database": {
5    "host": "localhost",
6    "port": 5432
7  },
8  "features": ["api", "cache"]
9}

YAML output example (after)

Read Only

1name: my-app
2version: "1.0.0"
3database:
4  host: localhost
5  port: 5432
6features:
7  - api
8  - cache
9

How it works

■ What is JSON? JSON (JavaScript Object Notation) represents key-value pairs, arrays, and nested objects as text. It is commonly used for API requests/responses and data exchange. ■ What is YAML? YAML (YAML Ain't Markup Language) is a human-readable config format that uses indentation for hierarchy. Widely used in Kubernetes manifests, CI/CD (e.g. GitHub Actions), Docker Compose, etc. ■ How conversion works The tool parses the JSON into an object and serializes it to indented YAML. All processing runs in the browser.

FAQ

Q: Why would I convert JSON to YAML?: A: YAML is more human-readable than JSON and is the standard format for Kubernetes manifests, GitHub Actions, Docker Compose, and many CI/CD pipelines. Converting lets you use existing JSON configs in those ecosystems.
Q: Does YAML support all JSON data types?: A: Yes. JSON's strings, numbers, booleans, null, arrays, and objects all map directly to YAML equivalents. No data is lost in conversion.
Q: Will comments in my JSON be preserved?: A: No. Standard JSON does not support comments. If you use JSON5 or JSONC, strip the comments first before converting.
Q: Why are some string values quoted in the YAML output?: A: The YAML serializer adds quotes when a value could be misread as another type — for example, "1.0" is quoted to prevent it from being parsed as a number, and "true" is quoted to prevent it from being parsed as a boolean.
Q: Does this tool send my data to a server?: A: No. All conversion is performed entirely in the browser. Your data is never sent to any server.