Fastway Tools

YAML ⇄ JSON Converter 

name: Fastway Tools
free: true
tools:
  - json
  - yaml
  - csv

YAML and JSON are the two most common configuration formats: JSON is strict and ubiquitous in APIs, while YAML is favored for human-edited config (CI pipelines, Kubernetes, Docker Compose). Rewriting one as the other by hand is tedious and easy to get wrong with indentation. This free YAML ⇄ JSON converter translates between them instantly in your browser, preserving types and structure.

How to convert

  1. Pick a direction: JSON → YAML or YAML → JSON.
  2. Paste your document — it converts instantly (errors are shown clearly).
  3. Copy the result into your config or code.

Why use this tool

  • Both directions, with types and nesting preserved.
  • Clear error messages for invalid input.
  • Runs in your browser — private and free.

FAQ

Which directions are supported?

Both: JSON to YAML and YAML to JSON, with one click to switch.

Is my data uploaded?

No. Conversion runs in your browser; the YAML parser is loaded locally on demand.

Does it preserve types?

Yes — numbers, booleans, null, arrays and nested objects are preserved across both formats.