YAML Formatter
Format and clean YAML config files with proper indentation and syntax structure.
JAVASCRIPT Formatter
Result will appear here...About YAML Formatter
The YAML Formatter & Linter standardizes YAML configuration files, Kubernetes manifests, Docker Compose scripts, and GitHub Actions workflows with customizable indentation (2 or 4 spaces), syntax validation, and key sorting.
How to Use YAML Formatter
Step 1
Paste your YAML code into the editor.
Step 2
Select your preferred indentation spacing (default: 2 spaces).
Step 3
Inspect the validation status badge and formatted output.
Step 4
Click "Copy Formatted YAML".
Practical Use Cases for YAML Formatter
Kubernetes & Docker Compose Configuration
Beautify and validate complex Kubernetes pod manifests, Helm charts, and docker-compose.yml files before deployment.
CI/CD Pipeline Workflow Formatting
Format GitHub Actions (.github/workflows) and GitLab CI YAML pipelines to eliminate tricky indentation errors.
Input & Output Examples
Beautifying Unformatted YAML
server:\n port: 8080\n database:\n host: "localhost"
server:\n port: 8080\n database:\n host: "localhost"
Key Features & Performance
- ✓Standardizes 2-space or 4-space indentation rules.
- ✓Strict YAML 1.2 syntax parser with line-and-column error highlighting.
- ✓Option to sort top-level and nested YAML mapping keys alphabetically.
- ✓100% Client-Side memory execution.
- ✓1-Click Copy formatted YAML and 1-Click .yaml download.
Key Terminology & Definitions
Significant Indentation
The syntactical rule in YAML and Python where whitespace indentation defines document hierarchy and block nesting.
YAML Mapping vs Sequence
A mapping represents key-value pairs (hash/dict); a sequence represents an ordered list of items prefixed with hyphens (-).