What is YAML Fixer?
Got broken YAML? Indentation issues, syntax errors, or incorrect list formatting can break your entire configuration. This tool automatically fixes those problems. Just paste your malformed YAML (YAML Ain't Markup Language) and we'll repair it.
As defined by the YAML 1.2 specification, YAML has strict formatting rules. Our fixer follows these standards to ensure your output is valid. Perfect for fixing YAML from config files, Docker Compose, Kubernetes manifests, CI/CD pipelines, or when you've manually edited YAML and introduced errors.
Everything runs in your browser – your data stays on your computer. Fix your YAML in seconds and get back to work.
What Makes This Tool Different
Automatic Indentation Fix
Detects and corrects indentation errors, which are the most common YAML issues. Automatically fixes spacing and alignment to make your YAML valid.
Smart Structure Repair
Repairs YAML structure while preserving your data. Handles nested objects, lists, multi-line strings, and complex hierarchies without losing any information.
Multiple Error Types
Fixes quote issues, list formatting, key-value syntax, anchor/alias problems, and data type errors. Handles most common YAML syntax mistakes.
Real-time Preview
See the fixed YAML immediately in the output panel. Compare before and after to verify all repairs are correct.
Syntax Highlighting
Both editors feature YAML syntax highlighting so you can easily identify keys, values, lists, and changes.
Privacy First
All processing happens in your browser using advanced algorithms. Your YAML never leaves your computer, ensuring complete data privacy and security.
How It Works
Paste Invalid YAML
Drop your broken YAML into the left editor. Not sure what broken YAML looks like? Click "Sample YAML" to see common errors like indentation issues.
Click Fix YAML
Click the "Fix YAML!!" button. Our advanced algorithm analyzes your YAML and automatically repairs indentation, syntax errors, and structural issues.
Review Fixed YAML
Review the repaired YAML in the right panel. The output is valid YAML ready to use in your configuration files or applications.
When You'd Actually Use This
Kubernetes Manifests
Fix broken Kubernetes YAML files. Repair indentation and syntax errors in deployments, services, and config maps.
Docker Compose
Repair Docker Compose files. Fix syntax errors in service definitions, volumes, networks, and environment variables.
CI/CD Pipelines
Fix YAML for GitHub Actions, GitLab CI, CircleCI, or Jenkins pipelines. Repair indentation and syntax errors in workflow definitions.
Config Files
Repair application configuration files. Fix YAML syntax in Spring Boot, Ansible playbooks, or other config files.
Common Questions
Is my YAML data stored or sent to a server?
No. Everything happens in your browser using advanced algorithms. Your YAML never leaves your computer – we don't store or see your data.
What types of YAML errors can it fix?
We fix common errors like indentation issues, list formatting problems, quote errors, key-value syntax mistakes, and data type issues. Very complex or ambiguous structural problems may require manual review.
Does it preserve my data?
Yes. We only repair the structure and syntax – all your actual data content, keys, and values stay exactly the same.
What if the YAML can't be fixed automatically?
For severely malformed YAML with ambiguous structure, the tool will fix what it can. Complex issues may require manual review.
Can it handle large YAML files?
Yes. The tool can handle large files, though processing time depends on file size and your computer's performance.
Is the fixed YAML always valid?
We aim to produce valid YAML that follows the specification. Always verify the output with our YAML Validator for critical applications.
Other YAML Tools You Might Need
Fixing YAML is just one part of working with YAML data. Here are other tools that complement this fixer:
Want to learn more about YAML? Check out the official YAML.org website or read the YAML 1.2 specification.