Online JSON to YAML Converter – One Click, No Signup

I like things that are simple. YAML is simple. JSON is great too, but sometimes it gets noisy. If you have ever wanted to turn structured JSON into clean YAML without using a command line or writing a script, this tool is for you.

This free JSON to YAML Converter runs right in your browser. Paste your JSON, click a button, and you get YAML. No waiting, no sign-up, and no hassle.

What Is JSON and YAML?

If you are working with APIs, dev tools, or configuration files, you have already seen both formats.

JSON uses brackets and commas:

{
  "name": "Laptop",
  "price": 799
}

YAML uses indentation and dashes:

name: Laptop
price: 799

They store the same data. The only difference is the format. YAML is easier to read and write, especially for humans.

What This Tool Does

You paste JSON into the top box. It parses and converts that input into YAML. The result appears in the bottom box. The tool uses a reliable open-source library called js-yaml that does all the conversion safely inside your browser.

No network requests. No files saved. No data collected. Just fast, readable YAML output.

Input and Output Examples

Let us look at some actual examples.

Input JSON:

{
  "user": {
    "id": 12,
    "role": "admin"
  }
}

Output YAML:

user:
  id: 12
  role: admin

Another one:

Input JSON:

{
  "fruits": ["apple", "banana", "mango"],
  "available": true
}

Output YAML:

fruits:
  - apple
  - banana
  - mango
available: true

Why Convert JSON to YAML?

YAML is easier to write by hand. You use it in:

• Kubernetes manifests
• GitHub Actions
• Docker Compose files
• Ansible playbooks
• Static site configs like Netlify or Hugo

Many tools support YAML. And if you start with data in JSON, converting it like this saves time.

Who Should Use This?

If you:

• Work with DevOps tools
• Write config files
• Create cloud deployments
• Build static websites
• Test APIs or SDKs

You will run into YAML sooner or later. This tool is your shortcut.

How to Use (Step-by-Step)

1. Copy your valid JSON.
2. Paste it into the input box.
3. Click Convert JSON to YAML.
4. Copy the result from the output.
5. Use it in your config or script.
6. Click Clear All to start again.

I built this for speed. When you are in the middle of writing a Kubernetes file and all you have is JSON, this tool saves you the effort. No need to Google the syntax or guess the spacing. Paste JSON, convert, copy YAML, move on.

Frequently Asked Questions

Can I convert arrays?
Yes. Lists in JSON become lists in YAML with dashes.

Is this tool safe?
Yes. All parsing is done inside your browser. Nothing is sent anywhere.

Can I convert large JSON files?
Small to medium ones work best. For very large files, use a desktop tool or command-line utility.

Does the output include quotes?
Only when needed. The tool tries to keep it clean and minimal.

Can I use the YAML output in Kubernetes or Docker?
Yes. Just validate it once before using in production.

Does it support nested structures?
Yes. Nested objects and arrays are handled correctly.

Will it remove extra spaces?
It formats everything cleanly. The output is meant to be readable and ready to paste.

Can I use this tool on mobile?
Yes. It is responsive and works on phones too.

Do I need to install anything?
No. Everything runs in your browser using one small library.

What if I paste invalid JSON?
You will see a clear error message. Fix the structure and try again.