Prettify YAML

Prettify YAML takes messy or compact YAML and formats it with clean indentation. Instantly readable and ready to export.

Paste your input above or import a file below.
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Supported file types: .txt, .yaml, .yml
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Options
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How to Use:

  • Paste YAML or import a .yaml, .yml, or .txt file into the input box
  • The output updates automatically with clean formatting and consistent spacing
  • Use “Prettify” to force a refresh, or make changes and let it live-update
  • Copy your result with “Copy Output”
  • Save it using “Export to File”
  • Toggle “Maximize output” if you want a larger preview area
  • Use “Clear All” to reset everything

What Prettify YAML can do:

Prettify YAML takes raw, compressed, or ugly YAML and turns it into a clean, structured format that’s actually readable. It parses your input using js-yaml, restructures it with proper indentation and spacing, and then dumps it back out line-by-line. If you’ve ever gotten YAML that’s just one giant block, or if the spacing is all over the place, this tool straightens everything out instantly. It’s great for previewing config files, checking nested keys, or just making sense of something someone else dumped into your chat. Since it runs entirely in your browser, your data never leaves your machine there are no uploads, no servers, just direct formatting right in front of you.

Example:

Input:

name: Alice
age:30
address:{street: Main, city: Townsville}

Output:

name: Alice
age: 30
address:
  street: Main
  city: Townsville

Common Use Cases:

Perfect for developers, sysadmins, or anyone working with configuration files, templates, or YAML APIs. If you’re reviewing pipeline steps, Kubernetes manifests, or Ansible variables, having nicely formatted YAML makes the job 10× easier. You can paste code from anywhere, clean it up with one click, and send it back in a presentable form no more squinting at mangled inline blobs.

Useful Tools & Suggestions:

After prettifying your YAML, try Visualize YAML Structure to see how everything lines up and nests. And if you’re prepping for a format swap, Transform YAML into JSON is a solid next step that keeps things easy to follow.

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