YAML Formatter

Format and beautify your YAML code. Validate syntax, fix indentation, and improve readability with our free online YAML formatter.

Indentation:

Input YAML

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name: CodeItBro
version: 1.0.0
dependencies:
  - js-yaml
  - prismjs
features:
  formatting: true
  validation: true

name: CodeItBro
version: 1.0.0
dependencies:
  - js-yaml
  - prismjs
features:
  formatting: true
  validation: true

Formatted YAML Valid

Clean Up YAML Without Guesswork

YAML files are powerful but unforgiving. This formatter helps you normalize indentation, validate syntax, and make deeply nested configuration files readable before you commit them to production systems.

Readable Config Files

Why Use This Tool?

Consistent Indentation

Rewrites uneven nesting into clean 2-space or 4-space indentation that matches common YAML style guides.

Built-In Validation

Surfaces parsing errors immediately so you can fix broken keys, bad lists, and invalid nesting before deployment.

Ideal for Dev Workflows

Perfect for Kubernetes manifests, CI pipelines, app configs, and any workflow where YAML formatting mistakes can break builds.

Private by Default

All formatting happens locally in your browser, so sensitive infrastructure or deployment config never leaves your machine.

How this YAML Formatter works

This utility formats and validates YAML code to improve readability and structure. It parses the input YAML, checks for syntax errors, and re-emits it with consistent indentation and spacing. Users can customize indentation levels (2 or 4 spaces) to match their project style guides. The formatter is essential for debugging YAML configuration files, which are strictly sensitive to indentation errors. It ensures your YAML is syntactically correct and visually clean.

Converting from JSON first? Use our JSON to YAML Converter to transform your data before formatting.

How to use this YAML Formatter

Paste YAML

Paste raw or messy YAML into the input editor.

Choose Indentation

Switch between 2-space and 4-space formatting to match your project style.

Copy Clean Output

Review the validated result, then copy or download the formatted YAML.

Example Usage

Formats inconsistent YAML indentation into a clean, valid structure ready for config files and CI workflows.

Input

name: CodeItBro version: 1.0.0 dependencies: - js-yaml - prismjs features: formatting: true validation: true

Output

name: CodeItBro version: 1.0.0 dependencies: - js-yaml - prismjs features: formatting: true validation: true

Frequently Asked Questions

What does a YAML formatter do?

It parses YAML, validates the structure, and rewrites it with consistent indentation so configuration files are easier to read and debug.

Will this fix invalid YAML automatically?

No. The tool will show parsing errors for invalid YAML, but it does not guess missing colons, bad indentation, or malformed lists.

Can I choose the indentation size?

Yes. You can format the output with either 2 spaces or 4 spaces depending on your team or framework conventions.

What kinds of files is this useful for?

It is especially useful for Kubernetes manifests, GitHub Actions workflows, CI pipelines, Docker Compose files, and app configuration files.

Is my YAML uploaded anywhere?

No. Formatting and validation run entirely in your browser, so your configuration data stays on your device.

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The YAML Formatter is maintained by CodeItBro. We aim to provide the best free developer tools on the web. If you have feedback or suggestions, please visit our contact page.

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