YAML Formatter
YAML Validation & Formatting: Validates YAML syntax and properly aligns indentation.
Standard: YAML 1.2 (3rd Edition)
The YAML Formatter properly aligns YAML data with incorrect indentation or structure and helps find YAML syntax errors. All processing happens in your browser; no data is sent to servers.
How to Use
- 1
In Live mode (default), processing happens automatically as you type. Switch to Manual mode to process on button click.
- 2
Paste your YAML into the input area; it will be validated and formatted automatically.
- 3
Select indent size (2 or 4 spaces).
- 4
Copy the result or download it as a YAML file.
Use Cases
Kubernetes Config Files
Format and validate K8s deployment, service, and other YAML configuration files.
Docker Compose
Properly align and validate indentation in docker-compose.yml files.
CI/CD Pipelines
Format and validate YAML configuration files for GitHub Actions, GitLab CI, CircleCI, etc.
YAML Config Files
Find and fix YAML syntax errors in application configuration files.
What is YAML?
YAML (YAML Ain't Markup Language) is a human-readable data serialization format.
YAML uses indentation to represent hierarchy and is a superset of JSON.
Data types: string, number, boolean, null, array, object.
YAML supports comments (#) and makes multiline strings easy to write.
Follows YAML 1.2 standard and is widely used in Kubernetes, Docker, CI/CD pipelines, etc.
Frequently Asked Questions (FAQ)
Q.Is my data safe?
A. Yes. All processing happens in your browser. No data is sent or stored.
Q.Difference between YAML and JSON?
A. YAML is indentation-based and supports comments. JSON is brace-based and stricter. All JSON is valid YAML.
Q.Can I use tabs?
A. No. YAML only allows spaces for indentation. Tabs are not allowed.
Q.Can it handle very large files?
A. Within browser memory limits. Files larger than 1MB may take longer.
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