YAML Formatter

Pretty-print YAML with consistent indentation. Paste minified or messy YAML from configs or CI files and click Run to beautify it.

  • Runs entirely in your browser
  • No data stored or sent to a server
  • Free forever — no signup
  • Instant conversion

Input and Output

Use the interactive encoder and decoder on this page to process your text.

Learn more about YAML formatting

How to Format YAML

YAML Formatting

When to Format YAML

Format YAML from Kubernetes manifests, GitHub Actions workflows, Docker Compose files, and Ansible playbooks. Consistent indentation makes diffs readable and errors easier to spot.

YAML vs JSON

YAML supports comments, multi-line strings, and anchors. It is human-friendly but indentation-sensitive — a single wrong space can break parsing. Always validate after formatting.

Frequently asked questions

Will formatting change my YAML semantics?

Formatting re-parses and re-serializes the document. Comments and custom tags may be lost. Review the output before committing to version control.

What indentation does the formatter use?

Output uses 2-space indentation, the most common YAML convention.