Why convert YAML to JSON?

JSON is the universal data exchange format for REST APIs, JavaScript, and most web tooling. Converting Kubernetes manifests, GitHub Actions workflows, or other YAML configs to JSON lets you process them with standard JS/Python/PHP libraries that do not include a YAML parser.

Are YAML comments preserved in the JSON output?

No. JSON has no comment syntax, so all YAML comments are discarded during conversion.

How are YAML anchors and aliases handled?

YAML anchors (&anchor) and aliases (*alias) are resolved before serialization. The resulting JSON contains the fully expanded values — no anchors or aliases appear in the output.

Can I convert a multi-document YAML file (separated by ---)?

The tool processes the first document in a multi-document YAML stream. If you need to convert each document separately, split the file at the --- separator first.

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.

Ctrl+K

YAML to JSON Conversion

Convert YAML data to JSON format. Useful for API requests and config compatibility. Enter text or upload a file (up to 100KB) and see real-time conversion results.

YAML Input

JSON Output

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How to use

About this tool

Converts YAML strings to JSON.

How to use

Paste YAML; the JSON output can be copied.

Use cases

• Using YAML as JSON in APIs/JS • Unifying config formats • Validation

Code Examples

YAML input example (before)

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

JSON output example (after)

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1{
2  "name": "my-app",
3  "version": "1.0.0",
4  "database": {
5    "host": "localhost",
6    "port": 5432
7  },
8  "features": ["api", "cache"]
9}
10

How it works

■ 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. ■ What is JSON? JSON (JavaScript Object Notation) represents key-value pairs, arrays, and nested objects as text. Commonly used for API requests/responses and data exchange. ■ How conversion works The tool parses the YAML into an object and serializes it to formatted JSON (2-space indent). All processing runs in the browser.

FAQ

Q: Why convert YAML to JSON?: A: JSON is the universal data exchange format for REST APIs, JavaScript, and most web tooling. Converting Kubernetes manifests, GitHub Actions workflows, or other YAML configs to JSON lets you process them with standard JS/Python/PHP libraries that do not include a YAML parser.
Q: Are YAML comments preserved in the JSON output?: A: No. JSON has no comment syntax, so all YAML comments are discarded during conversion.
Q: How are YAML anchors and aliases handled?: A: YAML anchors (&anchor) and aliases (*alias) are resolved before serialization. The resulting JSON contains the fully expanded values — no anchors or aliases appear in the output.
Q: Can I convert a multi-document YAML file (separated by ---)?: A: The tool processes the first document in a multi-document YAML stream. If you need to convert each document separately, split the file at the --- separator first.
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.