YAML Compare — Diff Two YAML Files Online

Compare two YAML documents side by side. Highlights added, removed, and changed values. Deep structural diff. Free, private, and browser-based.

About YAML Compare — Diff Two YAML Files Online

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This free online YAML compare tool parses two YAML documents and shows a side-by-side diff with added lines highlighted in green and removed lines in red. A deep structural diff then compares both documents as JavaScript objects recursively — identifying exactly which keys were added, which were removed, and which scalar values changed at any nesting depth. The optional "ignore array order" mode sorts arrays before comparison so that element reordering is not flagged as a difference. Use it to spot configuration drift between environments, review Kubernetes manifest changes before deploying, or audit GitHub Actions workflow updates. Your YAML data never leaves your browser.

Key Features

  • Side-by-side YAML diff with green additions and red removals
  • Deep structural diff: compares parsed YAML objects recursively at any depth
  • Identifies added keys, removed keys, and changed scalar values precisely
  • Ignore array order mode — prevents reordering from counting as a difference
  • Handles multi-document YAML files separated by ---
  • Your YAML data is never uploaded — comparison runs entirely in your browser

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