YAML Beautifier
A professional YAML formatting tool with advanced options for indentation control, key sorting, and more.
Source YAML
Formatting Options
Beautified Result
Why use a YAML Beautifier?
When working with complex Kubernetes orchestration files or large microservice configurations, messy indentation and unordered keys can significantly reduce code readability. The YAML Beautifier normalizes the indentation of valid YAML to your chosen style and sorts keys alphabetically (Sort Keys), making configuration files cleaner and more predictable in version control systems like Git Diff.
Our beautifier provides fine-grained control, including custom indentation size, disabling complex YAML anchor references, and enforcing a consistent quote style. All processing happens locally in your browser, ensuring your sensitive server configurations remain absolutely secure.
How to use this tool
Paste your YAML content into the left panel, then adjust indentation, sorting, and other parameters in the "Formatting Options" panel below. The tool formats as you type — the right panel instantly shows the beautified YAML output, no button click needed.
If your YAML has syntax errors, the tool will alert you in real time. Once beautification is complete, click "Copy Beautified Result" to use it immediately.
Typical Production Use Cases
Before committing, enable Sort Keys and standardize indentation to 2 spaces. When team members edit the same config on different machines, Git Diff will only show real business changes — not spurious diffs from inconsistent key ordering, dramatically reducing PR review noise.
When maintaining multiple Helm Charts, values.yaml format tends to drift. Before the lint step in your CI/CD pipeline, use the beautifier to enforce 2-space indent, disable Aliases, and set lineWidth to -1. This ensures generated chart packages behave consistently across different Helm versions.
With multiple contributors, GitHub Actions .yml files easily develop inconsistent indentation and mixed quote styles. Enforce 2-space indent with auto-quotes, and integrate the same formatting parameters in your team's pre-commit hook to eliminate these issues at the source.
Third-party Kubernetes YAML examples often use 4-space indentation or mixed tabs, which can cause silent parsing errors when applied directly. Paste them in, set indent=2 and noRefs=true, and you'll get clean manifests ready for kubectl apply.
Formatting Options Deep Dive
Sort Keys warning: While alphabetical sorting benefits most YAML, some formats have implicit key-order dependencies — Docker Compose's depends_on, Kubernetes spec/metadata nesting, and custom config parsers. Before using in automated pipelines, verify that sorted files still behave correctly.
When to use noRefs: YAML anchors (&) and aliases (*) are convenient locally, but many CI/CD platforms — especially older Jenkins versions and some GitLab Runner configs — don't support these extended YAML features. If your config will be consumed by such tools, enable noRefs to expand all aliases into standalone repeated blocks.
Line width and readability: lineWidth=-1 (unlimited) suits machine-consumed configs like long JSON values in Kubernetes Annotations or lengthy URLs. lineWidth=100 to 120 works best for human-review scenarios, preventing code review tools from failing to render diffs for overly long lines.