🧰 UtlKit

YAML Formatter

Format, beautify, and validate YAML files with error detection.

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📊 Data Summary (auto-filled)

Tool: yaml-formatter · /tools/yaml-formatter/

indent: 2

mode: format

What is this tool?

YAML formatter beautifies YAML documents with proper indentation, alignment, and syntax highlighting. YAML is widely used for configuration files (Docker Compose, Kubernetes, CI/CD, Ansible). The formatter fixes inconsistent indentation, removes trailing spaces, sorts keys optionally, and validates YAML syntax.

How to use

  1. 1

    Paste YAML

    Input your YAML content.

  2. 2

    Format

    Click to beautify with 2-space indentation.

  3. 3

    Copy result

    Get the formatted YAML.

Frequently Asked Questions

Why is YAML indentation important?

YAML uses indentation (spaces, not tabs) to define structure. Inconsistent indentation causes parse errors. Standard practice is 2 spaces per level. The formatter ensures consistent indentation throughout the document.

Supports YAML anchors?

Yes, anchors and aliases preserved.

Is my data processed locally?

Yes, all processing happens in your browser. No data is sent to any server.

What is the difference between YAML and JSON?

Both store the same data types. YAML is more readable (indentation-based, comments allowed, no braces); JSON is stricter (braces and quotes required, no comments) and easier for machines. They convert freely - the same data in both formats carries identical information, so pick by audience: YAML for humans and config files, JSON for APIs.

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