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JSON ⇄ YAML Converter

Convert JSON to YAML and YAML back to JSON. Nested objects and lists supported. Import files, pretty-print JSON, copy or download.

PrivateIn your browserInstantUnlimited
Valid JSON

Anchors, tags, and merge keys are not supported. Use plain maps, lists, strings, numbers, and booleans.

How it works

1

Paste or import

Paste JSON or YAML text, or import a .json, .yaml, or .yml file up to 5 MB. When converting to YAML, invalid JSON is flagged live.

2

Choose direction

JSON → YAML produces indented YAML with quoted strings where needed. YAML → JSON parses a simple subset and outputs JSON — toggle Pretty for 2-space indent.

3

Convert and export

Click Convert (counts toward the daily limit). Copy the result or download converted.yaml or converted.json. Swap moves output to input and flips direction.

Why JSON and YAML?

JSON is the lingua franca of APIs and browser apps; YAML is the favorite of ops teams for config files. Converting between them lets you edit configs in YAML and feed them to JSON-only tools, or prettify API responses into YAML for review.

Why use this tool

  • JSON to YAML and YAML to JSON
  • Nested objects and arrays
  • Import .json, .yaml, or .yml files
  • Live JSON syntax check (JSON → YAML mode)
  • Pretty-print or minify JSON output
  • Unlimited — no daily cap

Questions

What does JSON ⇄ YAML do?

It converts JSON documents to human-readable YAML and parses a simple YAML subset back into JSON.

What YAML features are not supported?

Anchors (&), aliases (*), tags, and merge keys (<<) are not supported. Plain maps, lists, strings, numbers, booleans, and null work.

Can I convert Kubernetes YAML?

Simple manifests without anchors usually work. Complex multi-document files or anchor-heavy configs may need a full YAML parser.

Why convert JSON to YAML?

YAML is easier to read and edit by hand — common for Docker Compose, CI configs, and Kubernetes manifests before JSON APIs need the data.

Is my data sent to a server?

No. Conversion runs entirely in this tab.

Is there a daily limit?

No. This tool has no daily cap.

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