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YAML to JSON converter

Convert YAML to JSON. Errors are pinpointed by line, and everything stays in your browser.

Runs 100% in your browser
YAML → JSON 
 
 
   
  
 
  
 
  
 
How to convert YAML to JSON
 
     
  1.  Paste your YAML. Paste YAML config into the input box. 
  2.  Read the JSON. The equivalent JSON appears live; errors are pinpointed. 
  3.  Copy or download. Grab the JSON with Copy or Download. 
    4.  
 
  
 
 
About YAML and JSON
 

YAML is the human-friendly configuration format behind Docker Compose, GitHub Actions, Kubernetes and
      countless app configs; JSON is what most programs and APIs consume. Because YAML is a superset of
      JSON, conversion is lossless for normal config data. Pair this with the
YAML validator to
      catch indentation mistakes before they break a deploy.

 
 
 
Frequently asked questions
What YAML version does it support?
It parses YAML 1.2 (the JSON-compatible spec) using the js-yaml library, covering the features you'll meet in config files, CI pipelines and Kubernetes manifests.
Can it convert multiple documents?
A single document converts to one JSON value. For multi-document YAML (separated by ---), the first document is converted; split them if you need each one.
What if my YAML is invalid?
You'll get a clear error with the line and column of the problem, so indentation or syntax mistakes are easy to find.
Is my data uploaded?
No — parsing runs entirely in your browser.
 
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