Free YAML to JSON Converter Online — Uttir
Uttir

YAML to JSON Converter

Parse YAML into structured JSON, instantly in your browser. Useful for reading Kubernetes manifests, GitHub Actions workflows, and any YAML config.

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YAML to JSON Converter — YAML is the format you will find in Kubernetes manifests, GitHub Actions workflows, Ansible playbooks, Docker Compose files, and most modern configuration. It is more human-friendly than JSON but harder to read once it gets past a few levels of nesting.

Parsing runs locally in your browser. Your YAML never leaves the page.

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What is yaml to json converter?

YAML is the format you will find in Kubernetes manifests, GitHub Actions workflows, Ansible playbooks, Docker Compose files, and most modern configuration. It is more human-friendly than JSON but harder to read once it gets past a few levels of nesting.

This tool takes YAML and renders it as pretty-printed JSON, so you can see the actual structure (objects, arrays, scalar values) at a glance. It also flags common YAML errors with the line and column where they occurred, so you can fix typos before committing.

How to use it

  1. Paste your YAML

    Drop a YAML document into the input.

  2. Read the JSON

    The output updates as you type. Click any key in the tree preview to collapse the rest.

  3. Copy or download

    Use Copy for the clipboard, or Download to save as a .json file.

Examples

Service manifest

A Kubernetes-style service definition as YAML, parsed to JSON.

apiVersion: v1
kind: Service
metadata:
  name: web
spec:
  ports:
    - port: 80
      targetPort: 8080

Result: { "apiVersion": "v1", "kind": "Service", "metadata": { "name": "web" }, "spec": { "ports": [{ "port": 80, "targetPort": 8080 }] } }

GitHub Actions workflow

A minimal CI workflow as YAML, parsed to JSON.

name: CI
on: [push]
jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: npm test

Result: { "name": "CI", "on": ["push"], "jobs": { "test": { "runs-on": "ubuntu-latest", "steps": [{"uses": "actions/checkout@v4"}, {"run": "npm test"}] } } }

Frequently asked questions

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Last reviewed: 2026-08-26