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YAML Cheat Sheet

Print-ready cheat sheet for YAML, organized for fast lookup, study, and desk-side use

Source: YAML Specification (yaml.org)
License: MIT
Updated: 2026-03-27

Sample

What's in this cheat sheet

Syntax
Scalars
Sequences
Mappings
Anchors & Aliases
Multi-line Strings
Tags
Common Patterns

Basic Rules

`Indentation`	Spaces only (no tabs), consistent depth
`#`	Comment (to end of line)
`---`	Document start marker
`...`	Document end marker
`Case sensitive`	Keys and values are case-sensitive

Minimal Example

---
name: Alice
age: 30
active: true

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