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How to use

  1. 1 Paste valid YAML.
  2. 2 Toggle pretty print for indented JSON, off for compact.
  3. 3 Copy or download.

Why use this tool

  • Powered by js-yaml — handles anchors, aliases, multi-document streams.
  • Validation catches syntax errors with line numbers.
  • Pretty mode for readability, compact mode for storage / transmission.
  • Pure client-side.

Frequently asked questions

How are dates and booleans converted?

js-yaml uses YAML 1.2 — dates become ISO strings, true/false as booleans. "yes"/"no" stay strings (1.2 spec).

What about multi-document YAML (--- separators)?

Only the first document is converted. To handle multiple, split on `---` first.

Can it handle YAML anchors and aliases?

Yes — anchors (&) and aliases (*) are resolved on parse, producing duplicated data in JSON.

AI Summary

YAML to JSON Converter is a free developer utility by Zerethon Tools. Convert YAML to JSON in your browser. Catches syntax errors with parser messages. Runs entirely in the browser — no signup, no upload.

Category
Developer
Pricing
Free
Privacy
Browser-based
Signup
Not required

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