JSON to YAML

Convert JSON files and objects into clean, readable YAML documents online. Supports nested objects, array sequences, multiline strings, and custom 2-space or 4-space indentation.

Private • In-browser processing • Zero server uploads

Interactive workspace loading...

How to Use JSON to YAML

1
Paste JSON
Paste your JSON payload or drop a .json file into the input editor.
2
Select Indentation
Choose 2 Spaces (recommended) or 4 Spaces indentation.
3
Copy YAML
The generated YAML appears immediately, ready to copy or download as a .yml file.

Key Features

Clean YAML Serialization
Generates properly indented, human-readable YAML 1.2 from any JSON payload.
Smart String Escaping
Automatically wraps strings containing special characters (`:`, `#`, `[`, `{`) in safe double quotes.
Multiline Block Formatting
Converts strings containing line breaks into clean YAML block scalar literals (`|`).
Instant Client-Side Conversion
Processes files securely in your browser without transmitting your data across the internet.

Common Use Cases

  • Converting JSON database dumps into human-editable YAML configuration manifests.
  • Generating Kubernetes Deployment or Service YAML files from JSON generator scripts.
  • Converting Swagger/OpenAPI JSON specifications into clean YAML documents.
  • Authoring CI/CD pipelines (GitHub Actions, GitLab CI) from JSON templates.

Frequently Asked Questions

JSON arrays (`["a", "b"]`) are translated into YAML bulleted sequences starting with a hyphen and a space (`- a\n- b`).

JSON `null` values are written as `null` in the YAML output, which is the standard representation in YAML 1.2.

Yes! Because the serializer runs locally in high-performance browser JavaScript, it handles megabytes of nested data smoothly.

YAML to JSON
Convert a YAML document to equivalent JSON format.
Prettify JSON
Format, minify, validate or sort keys of any JSON — live in your browser.
Prettify YAML
Reformat and beautify a YAML document with consistent indentation.
JSON to XML
Convert a JSON document to XML format with configurable element names.
XML to JSON
Convert an XML document to equivalent JSON structure.