JSON ↔ YAML Converter
Convert between JSON and YAML instantly. Paste your JSON to get clean YAML output, or convert YAML back to formatted JSON. Validates syntax as you type — no server upload required.
How to Use JSON to YAML Converter
- Choose conversion direction: JSON→YAML or YAML→JSON using the mode buttons.
- Paste your JSON or YAML into the input area (or click "Load Example" for a sample).
- The converted output appears instantly. Click "Copy Output" to copy the result.
Features
- Bidirectional conversion — JSON to YAML and YAML to JSON
- Real-time conversion as you type
- Syntax validation with clear error messages
- 2-space indentation in YAML output
- Load example data with one click
- 100% client-side — your data never leaves the browser
JSON ↔ YAML Converter: practical uses
Use JSON ↔ YAML Converter when you need a fast, clear, private result without creating an account. This page also supports related needs like JSON ↔ YAML Converter online, JSON ↔ YAML Converter validator, JSON ↔ YAML Converter formatter so you can choose the right workflow.
When it helps
- Best for: Pasting code, structured data, tokens, hashes, or encoded text and getting a readable result quickly.
- Helpful details: Use the examples, validation messages, copy actions, and formatting options to catch mistakes before you ship.
- Next step: Open a related formatter, validator, encoder, parser, or converter when your workflow moves to another format.
For the next step, try JSON Formatter & Validator, Regex Tester & Log Extractor, Base64 Encoder & Decoder, Hash Generator.
Frequently Asked Questions
What is YAML?
YAML (YAML Ain't Markup Language) is a human-friendly data serialization format. It uses indentation and minimal punctuation, making it easier to read than JSON. It's widely used for configuration files (Docker, Kubernetes, GitHub Actions).
Is all JSON valid YAML?
Yes — JSON is technically a subset of YAML 1.2. Any valid JSON document is also valid YAML. However, YAML supports additional features like comments and multi-line strings that JSON does not.
Does YAML support comments?
Yes. YAML supports comments using the # character. JSON does not support comments at all. When converting YAML to JSON, comments are discarded.
What indentation does the converter use?
The converter outputs YAML with 2-space indentation, which is the most common convention for YAML files in modern tooling.
Is my data sent to a server?
No. This tool runs entirely in your browser using the js-yaml library. Your data is never uploaded to any server, making it safe for sensitive configuration data.
