YAML Formatter and Beautifier
Clean up and standardize your YAML files with our free formatter. Fix indentation, align colons, and improve readability in seconds.
YAML Formatter & Beautifier
Format and beautify YAML with consistent indentation
How it works
Paste your YAML content into the editor. The formatter parses and re-emits it with consistent indentation, proper spacing, and clean structure. Minified or messy YAML becomes readable and well-organized.
Options control indentation (2 or 4 spaces), line width for wrapping, quote style, and null representation. Choose settings that match your project's style guide or team conventions.
Formatting example:
Before:
name:John,age:30,address:{city:NYC,zip:10001}
After:
name: John
age: 30
address:
city: NYC
zip: 10001The beautifier also sorts keys alphabetically if desired, removes unnecessary quotes, and normalizes line endings. Output is clean, consistent, and ready for version control.
When You'd Actually Use This
Code review preparation
Format configs before PR. Consistent style across team. Easier to review changes. Professional appearance.
Minified YAML recovery
Received minified config? Beautify for editing. Debug production configs. Understand structure. Make modifications.
Team standardization
Enforce consistent formatting. Project style guide compliance. Automated formatting. Reduce merge conflicts.
Documentation generation
Pretty configs for README. Example files in docs. Clean appearance matters. Professional documentation.
Legacy config cleanup
Old configs with bad formatting. Standardize inherited projects. Improve maintainability. Fresh start.
Learning YAML structure
See proper formatting. Understand indentation. Learn best practices. Educational value.
What to Know Before Using
Formatting doesn't change data.Structure and values preserved. Only whitespace and style change. Semantically identical output. Safe to apply.
Comments may be repositioned.Inline comments stay with their lines. Block comments may move. Content preserved, position may vary.
Key sorting is optional.Alphabetical order helps find keys. But may change logical grouping. Choose based on preference.
Quote style affects appearance.Single, double, or minimal quotes. Strings without special chars unquoted. Configurable for project needs.
Pro tip: Add YAML formatting to your CI pipeline. Catch formatting issues automatically. Enforce team standards consistently.
Common Questions
What's the difference between format and validate?
Format changes appearance, validates checks correctness. Format assumes valid YAML. Validate finds errors. Use both for best results.
Does it work with large files?
Browser-based, so memory limits apply. Most configs format quickly. Very large files may be slow. Split if needed.
Can I customize indentation?
Yes, 2 or 4 spaces typically. Choose based on project. 2 spaces is YAML convention. Match existing files.
Does it preserve anchors?
Yes, anchors and aliases preserved. Structure maintained. References stay intact. Complex YAML supported.
Can I minify YAML?
Yes, minify option removes whitespace. Single line where possible. Smaller file size. Less readable.
How do I download formatted output?
Copy button copies to clipboard. Download button saves as file. Direct use in projects. Ready for commit.
Is my data sent anywhere?
No, formatting happens in browser. Your YAML stays local. Safe for sensitive configs. Client-side processing.
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