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YAML to JSON Converter & Validator

Convert YAML (Docker Compose, Kubernetes, GitHub Actions, configs) to JSON and catch indentation mistakes.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: YAML uses indentation (spaces) instead of brackets. This tool supports normal YAML: maps, lists, block text (| and >), comments and [ ] / { } lists. Anchors (& *) are not supported.

How to use it (step by step)

  1. 1Type or paste your text into the “YAML” box. There is already an example in it so you can see how it works; press Clear to start with your own.
  2. 2Choose your settings: “Indent”.
  3. 3The answer appears right away in the “JSON” box. No button needed.
  4. 4Press Copy and paste the result wherever you need it.

Words to know

JSON
A common text format apps use to store and send data, made of names and values in { } brackets.
YAML / XML
Other text formats for storing settings and data. Same idea as JSON, different writing style.
Docker / container
Docker packs an app with everything it needs into a “container” that runs the same on any computer.
Indentation / line endings
Indentation is the space at the start of a line that shows structure. Line endings are invisible characters that end each line: LF (Mac/Linux) or CRLF (Windows).

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