What is the difference between JSON and YAML?

JSON uses braces, brackets and quotes and is compact and universal for APIs. YAML uses indentation and is designed to be human-readable, which is why it dominates configuration files for tools like Docker, Kubernetes, GitHub Actions and Ansible. They represent the same data structures.

Does the converter handle nested objects and arrays?

Yes. Nested objects become indented YAML mappings and arrays become dash-prefixed lists, at any depth. Booleans, numbers, null and strings are all converted to their correct YAML representations.

Will it quote strings that need quoting?

Yes. Strings containing special characters, or that could be mistaken for numbers, booleans or null (like 'true' or '123'), are automatically quoted so the resulting YAML parses back to the exact same data.

Is my data uploaded anywhere?

No. The conversion runs entirely in your browser, so your JSON — including any API keys or config secrets — never leaves your device.

Why convert JSON to YAML?

Developers convert API responses or data samples into YAML to drop them into configuration files, which are far easier to read and edit by hand than JSON, especially for complex nested settings.

JSON to YAML Converter

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JSON to YAML Converter — Config-Ready YAML in One Click

JSON is the language of APIs; YAML is the language of configuration. This free converter turns any valid JSON into clean, correctly-indented YAML instantly — the exact format you need for Docker Compose, Kubernetes manifests, GitHub Actions workflows, Ansible playbooks and countless other config files. It runs entirely in your browser, so your data never leaves your device.

Why YAML for Configuration?

Compare the same data in both formats. JSON: {"name":"app","ports":[80,443]}. YAML:

name: app
ports:
  - 80
  - 443

YAML drops the braces, brackets and most quotes, using indentation to show structure. For deeply nested configuration that humans edit by hand, that readability is a genuine productivity win — which is why the entire modern DevOps stack standardized on it.

Correct Conversion, Every Type

Objects become indented key: value mappings.
Arrays become dash-prefixed lists.
Strings that look like other types ("true", "42", "null") are automatically quoted so they stay strings and the YAML round-trips to identical data.
Numbers, booleans and null are written in native YAML form.

Private by Design

Configuration data often contains sensitive values — hostnames, tokens, internal settings. This converter processes everything locally in your browser and never uploads a single byte, so it is safe to paste real config data. Unlimited conversions, no account required. Need the reverse or a different format? Pair it with our JSON minifier and other developer tools.