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YAML Formatter
YAML FormatterReady
Indent
Raw YAML Input
0 lines · 0 B
Raw input remains untouched until you click Format
Formatted YAML OutputEditable
0 lines · 0 B
Ready to copy (⌘⇧C) or download (⌘S)

YAML Formatter & Beautifier

Format, beautify, and indent YAML documents online. Enforce consistent 2-space indentation and clean syntax structure with 100% private browser processing.

YAML 1.2 standard
Indent normalization
Comment preservation
One-click copy
Step-by-Step Guide

How to Use YAML Formatter Online

Follow these quick steps to process your data online directly in your browser with zero latency and 100% privacy.

1
Step 1Parses YAML string using standard YAML 1.2 parser.
2
Step 2Normalizes indentation to consistent 2-space hierarchy.
3
Step 3Preserves comments, multi-line blocks, and scalar types.
Demonstration

Example Input & Output

Normalizes inconsistent spacing and aligns YAML mappings with standardized 2-space indentation.

Raw YAML Input
server:
port: 8080
environment: production
database:
host: localhost
user: postgres
pool:
min: 2
max: 10
Formatted YAML Output
server:
  port: 8080
  environment: production
database:
  host: localhost
  user: postgres
  pool:
    min: 2
    max: 10
Applications

Common Use Cases

Fixing CI/CD YAML

Fix broken indentation in GitHub Actions or GitLab pipelines.

Kubernetes Config Alignment

Align complex nested Kubernetes deployment files.

Guidelines

Specifications & Gotchas

Tab Characters

YAML strictly forbids tab characters (\t) for indentation; use spaces instead.

Inconsistent Indentation

Child properties must be indented further than parent keys.

Knowledge

Frequently Asked Questions

How do I format YAML online?

Paste your YAML code into the input editor; the tool formats and validates indentation automatically.

Can YAML use tabs for indentation?

No, the YAML specification strictly requires spaces. The formatter converts tabs to spaces automatically.

Is YAML case-sensitive?

Yes, keys and values in YAML are case-sensitive.

Workflow

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