MyAITools
Formatter

YAML Formatter

YAML Formatter is a free online formatter that helps you reformat YAML; normalize indentation, line wrapping and quoting for tidy config files. YAML Formatter uses 3 input fields, returns 3 output values, and runs in your browser on the device.

Key facts

Inputs
3 fields: YAML, Indent, and Line width (0 = no wrap)
Outputs
3 values: Formatted YAML, Original size (chars), and Formatted size (chars)
Runtime
your browser on the device
Mode
Formatter
Privacy
Files and text stay in the browser session.
Cost
$0, no account required

How to use YAML Formatter

  1. 1

    Paste or fill in the input

    Enter your text or values into the input fields on the page.

  2. 2

    Run the utility

    Click Compute to run the utility in your browser and review the result.

  3. 3

    Copy the output

    Copy the output value you need from the result panel.

YAML Formatter details

First, enter YAML in YAML Formatter. Next, review Formatted YAML, Original size (chars), and Formatted size (chars). Additionally, YAML Formatter uses 3 input fields and 3 output blocks so the result is easy to scan and copy.

Paste any YAML and get a canonical, reformatted version. The document is parsed and re-emitted with the indent size and line-width of your choice, so anchors are resolved, quoting is normalized and inconsistent indentation is fixed. Set the line width to 0 to disable wrapping entirely. Powered by the eemeli/yaml library. Runs entirely in your browser; your config never leaves this page.

Common searches

  • yaml formatter
  • format yaml
  • pretty print yaml
  • yaml beautifier
  • yaml prettifier
  • yml formatter

Related tools

Tools that work with the same formats — most users open one of these next.

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DevValidator

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Validate JSON and see errors with line numbers — plus auto-format/beautify. Free, instant, in-browser.

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Frequently asked

What is YAML Formatter?

YAML Formatter is a free online formatter that helps you reformat YAML; normalize indentation, line wrapping and quoting for tidy config files. YAML Formatter uses 3 input fields, returns 3 output values, and runs in your browser on the device.

What inputs and outputs does YAML Formatter use?

YAML Formatter uses 3 input fields: YAML, Indent, and Line width (0 = no wrap). YAML Formatter returns 3 output values: Formatted YAML, Original size (chars), and Formatted size (chars).

Do my files and data stay private?

Yes. YAML Formatter runs entirely in your browser using your device's CPU. Files and text are never uploaded to our servers, so your data stays private.

How do I use YAML Formatter?

Open YAML Formatter, paste or fill in the input fields, and the result updates instantly. YAML Formatter runs in your browser with no upload and no waiting.

Which browsers does YAML Formatter support?

Any modern browser works in Chrome, Firefox, Safari, and Edge on desktop and mobile. YAML Formatter uses standard web APIs and does not require any plugin, extension, or sign-up.