JSON to YAML Converter
Settings
YAML OPTIONS
Quote Style
GENERAL
Syntax Highlighting
Line Numbers
Word Wrap
Font Size
OPTIONS
Indent
Indent Style
Sort Keys
Trailing Commas
Allow Comments
Trailing Commas: strips [1, 2,] → [1, 2] before parsing.
Allow Comments: strips // and /* */ before parsing.
Switch to Output to see the YAML result and copy it straight into your config file or pipeline.
Settings
GENERAL
Syntax Highlighting
Line Numbers
Word Wrap
Font Size
Related Tools
More JSON tools
All tools run entirely in your browser — no uploads, no sign-up required.
About YAML
What YAML is
YAML (YAML Ain't Markup Language) is a human-readable data serialization format. It is indentation-based, whitespace-sensitive, and designed to be easy to write and read by hand.
The config file standard
Kubernetes manifests, Docker Compose files, GitHub Actions workflows, Ansible playbooks, and most modern CI/CD pipelines are written in YAML. Understanding it is essential for DevOps work.
Cleaner than JSON for configs
YAML has no quotes around keys, no trailing commas, and supports inline comments. For configuration files that humans edit frequently, YAML is far more readable than JSON.
Why this tool helps
Starting from JSON is common when an API returns config data or when migrating settings between systems. This tool handles all the indentation, quoting, and nesting rules automatically.
Benefits
Why convert JSON to YAML
YAML is the dominant format for configuration files in modern infrastructure tools. Converting from JSON saves you from writing it by hand.
Drop into Kubernetes directly
Kubernetes only accepts YAML or JSON for manifests. When you build a config programmatically as JSON, this converter turns it into deploy-ready YAML in one step.
More readable for humans
YAML removes the visual noise of quotes and brackets. Config files that teams read and edit daily are much clearer in YAML than in JSON.
No library dependency
You get clean YAML output without installing js-yaml or yamljs in your project. Useful when prototyping or working in environments where adding packages is restricted.
Built for correct YAML output
Handles string quoting, deep nesting, arrays of objects, and edge cases that naive converters get wrong.
Automatic string quoting
Strings containing special YAML characters (colons, brackets, pipes) are automatically quoted so the output is always parseable by YAML libraries.
Correct array indentation
Arrays of objects use the correct YAML block sequence style with dash-prefixed items at the right indentation level.
Deep nesting support
Arbitrarily nested objects and arrays are handled with consistent two-space indentation throughout the output.
Null and boolean preservation
JSON null, true, and false map to their correct YAML equivalents rather than being stringified.
In-browser, no upload
All conversion happens locally in the browser. Your JSON payloads — including secrets and config values — never leave your machine.
Questions about JSON to YAML
Common questions about the conversion and how edge cases are handled.
Yes for all standard JSON types. Strings that contain YAML special characters are automatically quoted. The output can be parsed by js-yaml, PyYAML, and other standard libraries.
JSON null maps to the YAML null scalar. Boolean true and false map to their YAML equivalents without quotes.
No. JSON has no concept of comments so none can be inferred. You can add comments manually to the output after converting.
No. The conversion runs entirely in your browser. Sensitive config values and secrets in your JSON never leave your machine.