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YAML Formatter
Format and validate YAML documents
About YAML Formatter
YAML Formatter lets you format and validate yaml documents.
Category: Text.
Frequently asked questions
What does formatting YAML do?
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It normalizes indentation, removes redundant quotes, and ensures consistent structure. The formatted YAML is semantically identical to the input — only presentation changes.
Why is YAML indentation-sensitive?
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YAML uses indentation to indicate nesting, unlike JSON which uses braces. A wrong indentation level completely changes the document structure, making consistent formatting critical.
What is the recommended indentation for YAML?
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2 spaces is the most common convention (used by Kubernetes, Docker Compose, GitHub Actions). YAML prohibits tabs — always use spaces.