Are comments preserved after formatting?

Comments are not preserved because the formatter parses the YAML into a data structure and re-serializes it. Use the YAML minifier if you need to strip comments intentionally.

What indentation options are available?

2-space indentation (common for Kubernetes manifests and most YAML tooling) and 4-space indentation (preferred in some Python projects) are both supported.

What YAML features are supported?

Scalars, strings, numbers, booleans, null, sequences (arrays), and mappings (objects) are all handled. Multi-document YAML (---) and complex anchors/aliases may not be fully supported.

YAML Formatter

Format and beautify YAML with consistent indentation (2 or 4 spaces).

Indentation:

$yaml input

lines

0 chars1 lines

$formatted yaml[READY]

lines

0 chars1 lines

Related Tools

YML✓YAML Validator

Validate YAML syntax and preview the parsed JSON representation.

YML↓YAML Minifier

Strip comments and blank lines from YAML to produce compact output.

{}JSON Formatter

Pretty-print and format JSON with proper indentation.

FAQ

Are comments preserved after formatting?: Comments are not preserved because the formatter parses the YAML into a data structure and re-serializes it. Use the YAML minifier if you need to strip comments intentionally.
What indentation options are available?: 2-space indentation (common for Kubernetes manifests and most YAML tooling) and 4-space indentation (preferred in some Python projects) are both supported.
What YAML features are supported?: Scalars, strings, numbers, booleans, null, sequences (arrays), and mappings (objects) are all handled. Multi-document YAML (---) and complex anchors/aliases may not be fully supported.

Paste YAML content and get it back with consistent indentation, normalized spacing around colons, and clean structure. Choose between 2-space and 4-space indentation. The formatter parses the YAML and re-serializes it, so output is always structurally valid.