YAML Diff — Compare Two YAML Documents Online Free

Paste two YAML documents to compare them and highlight every added, removed, and changed key.

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What is YAML Diff?

A YAML diff compares two YAML documents and identifies exactly what changed: keys added, removed, or modified. Unlike a plain text diff, a YAML diff understands document structure — reformatting or re-ordering keys does not produce false differences. This is particularly useful for comparing Kubernetes manifests, Helm values files, or GitHub Actions workflows before and after changes.

  • Kubernetes — compare manifests before and after a kubectl apply
  • Helm — diff values files between environments
  • CI/CD — review workflow changes before merging
  • Ansible — audit playbook changes between versions

Frequently Asked Questions

Does formatting affect the diff?

No. Both documents are parsed into data structures before comparison. Indentation differences and key reordering do not produce false differences.

Are YAML comments compared?

No. Comments are stripped during parsing and are not part of the data model. Only data values are compared.

Is my data safe?

Yes. All processing runs in your browser. Your YAML documents are never sent to any server.