JSON to YAML converter

Paste JSON to get clean YAML or paste YAML to get formatted JSON. Runs entirely in your browser — nothing is sent to a server.

Indent

JSON input

YAML output

What is JSON to YAML conversion?

JSON and YAML both represent the same underlying data structures — objects, arrays, strings, numbers, and booleans — but YAML trades braces and brackets for indentation, producing output that is easier for humans to read at a glance.

YAML is the standard format for configuration files across the DevOps ecosystem: Kubernetes manifests, Docker Compose files, CI/CD pipelines (GitHub Actions, GitLab CI, CircleCI), and Ansible playbooks all use YAML. Converting between the two formats is one of the most common tasks when working with infrastructure and deployment tooling.

How to convert JSON to YAML

Paste your JSON into the input panel (or click YAML → JSON to go the other way).
The converted output appears instantly — no button to press, no upload, no server round-trip.
Pick 2- or 4-space indentation to match your project's style.
Click copy and paste the YAML into your config file, manifest, or pipeline.

For example, the JSON object {"server": {"port": 8080, "ssl": true}} becomes:

server:
  port: 8080
  ssl: true

When to convert between JSON and YAML

Writing Kubernetes manifests from API responses
Converting CI/CD configs between formats
Preparing config files for tools that expect YAML
Sharing structured data in a more readable format
Migrating between configuration systems

JSON vs. YAML: key differences

YAML uses indentation instead of braces and brackets to denote structure, which makes it more compact and scannable. YAML supports comments (lines starting with #), multi-line strings using block scalars (| and >), and anchors for reusing repeated values. There is no trailing-comma problem because YAML does not use commas to separate entries.

JSON, on the other hand, is stricter and more universally supported by APIs and programming languages. Every valid JSON document is also valid YAML (as of YAML 1.2), but the reverse is not always true because of comments and other YAML-specific features.

From config files to instant insights

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FAQ

How do I convert JSON to YAML?

Paste your JSON into the input panel and the YAML output appears instantly — no upload, signup, or button press required. Choose 2- or 4-space indentation, then copy the result. The converter also works in reverse: switch to YAML → JSON mode to turn any YAML document into formatted JSON.

Is JSON valid YAML?

Yes. As of YAML 1.2, every valid JSON document is also valid YAML, because YAML is a superset of JSON. The reverse is not true: YAML features like comments, anchors, and block scalars have no JSON equivalent, which is why converting YAML to JSON strips comments.

Does converting lose any data?

No. JSON and YAML represent the same data model. Converting back and forth preserves all values, types, and structure exactly.

Is my data stored or sent to a server?

No. All conversion runs entirely in your browser using JavaScript. Your data is never transmitted, logged, or stored anywhere.

Does it support YAML comments?

When converting YAML to JSON, comments are stripped because JSON does not support comments. When converting JSON to YAML, no comments are added.

Can it handle multi-line strings?

Yes. YAML multi-line strings (block scalars with | or >) are correctly parsed when converting to JSON, and long strings in JSON are output cleanly in YAML.

What YAML version is supported?

This tool uses YAML 1.2, which is the current standard and is a superset of JSON. Most YAML files you encounter will work correctly.

Can I convert YAML with anchors and aliases?

Yes. YAML anchors (&) and aliases (*) are resolved during parsing, so the JSON output contains the fully expanded data.