YAML Formatter & Beautifier
Format and beautify YAML files online. Fix messy indentation, normalize syntax, and pretty print YAML 1.2 documents with client-side privacy.
How YAML Formatter Works
- Parses YAML string using standard YAML 1.2 parser.
- Normalizes indentation to consistent 2-space hierarchy.
- Preserves comments, multi-line blocks, and scalar types.
Example Input & Output
Normalizes inconsistent spacing and aligns YAML mappings with standardized 2-space indentation.
server: port: 8080 environment: production database: host: localhost user: postgres pool: min: 2 max: 10
server:
port: 8080
environment: production
database:
host: localhost
user: postgres
pool:
min: 2
max: 10Common Use Cases
Fixing CI/CD YAML
Fix broken indentation in GitHub Actions or GitLab pipelines.
Kubernetes Config Alignment
Align complex nested Kubernetes deployment files.
Key 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.
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.
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