Paste your broken YAML here and click "Fix YAML!!" to repair itEnter Invalid YAML

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.

How to Use the YAML Fixer

Follow these steps to fix broken YAML. Each step uses the actual buttons and panels on this page.

Paste Invalid YAML or Load Sample

Paste broken YAML into the left editor. Click Sample YAML to load example telecomm subscriber YAML with common indentation errors. Example:

subscriber:
  subscriberId: SUB-1001
  plan: Unlimited 5G
  dataUsage: 45.2
  addOns:
    - international
- hotspot

The - hotspot line has wrong indentation.

Click Fix YAML!!

Click the green Fix YAML!! button. The algorithm analyzes your YAML and repairs indentation, syntax errors, and structural issues.

Review Fixed YAML

The right panel shows the repaired YAML. Use it in your configuration files or copy it back. All processing runs in your browser.

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?

YAML 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 YAML syntax errors like indentation issues, list formatting problems, and key-value mistakes. Very complex structural problems may need manual review per the YAML spec.

Does it preserve my data?

YAML Specification 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?

Wikipedia YAML 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 following the official specification. For more context, see Wikipedia's YAML article. Always verify with our YAML Validator for critical apps.

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:

YAML Fixer - Fix YAML Errors & Repair Invalid YAML Online