Convert YAML to JSON instantly

Convert YAML to JSON in your browser. No upload, no server. Paste or drop your YAML file and get clean JSON instantly.

Drop your YAML file here

or click to browse

Your files stay private
No server upload
Instant conversion

 

Example

Input (YAML)

apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-app
  labels:
    app: my-app
spec:
  replicas: 3

Output (JSON)

{
  "apiVersion": "apps/v1",
  "kind": "Deployment",
  "metadata": {
    "name": "my-app",
    "labels": {
      "app": "my-app"
    }
  },
  "spec": {
    "replicas": 3
  }
}

About this converter

YAML is the standard config format for Kubernetes, Docker Compose, GitHub Actions, and most CI/CD tools. But APIs, JavaScript tooling, and many programming languages expect JSON. This converter parses your YAML and outputs formatted JSON. It handles nested objects, arrays, multiline strings, anchors, and aliases. Everything runs in your browser. Your config files are not sent to any server, which matters when they contain secrets, API keys, or internal infrastructure details.

YAML vs JSON

YAML Ain't Markup Language (YAML)

YAML is a human-friendly data serialization language commonly used for configuration files in DevOps tools like Docker Compose, Kubernetes, and GitHub Actions.

Common uses: configuration files, CI/CD pipelines, and data serialization

YAML 1.2.2 specification

JavaScript Object Notation (JSON)

JSON (JavaScript Object Notation) is a lightweight data format that is easy for humans to read and write, and easy for machines to parse and generate.

Common uses: APIs, web applications, and configuration files

ECMA-404 (JSON specification)

How to convert YAML to JSON

  1. 1

    Upload

    Upload your YAML file using the drop zone above, or click to browse your device.

  2. 2

    Convert

    Click the "Convert to JSON" button. The conversion runs instantly in your browser.

  3. 3

    Download

    Download your converted JSON file. No data was sent to any server.

Frequently Asked Questions

Last updated: 2026-03-23