Format GitHub Actions YAML Online — Workflow Beautifier

Beautify GitHub Actions workflow YAML with 2-space indent. Comments are not preserved (js-yaml) — all processing stays local.

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GitHub Actions formatter — workflow YAML playbook
Normalize GitHub Actions workflow YAML before review or paste into docs. Indentation only — not a semantic rewriter.

Developer notes

Pretty-prints workflow YAML with 2-space indent (GitHub convention). Auto-format on paste/upload/sample; manual edits use the Format button (⌘↵). Comments may be dropped by the YAML round-trip (silent). Pair with validate-github-actions for structural checks.

When teams pick this route

Clean up hand-edited workflow YAML before opening a PR. Align indentation across copied examples from Actions docs. Format a single workflow when Prettier YAML is not configured. Quick normalize before validate-github-actions structural checks.

Worked examples

Messy job steps from a gist

Before

name: CI on: push jobs: build: runs-on: ubuntu-latest steps: - uses: actions/checkout@v4 - run: npm test

After format

name: CI on: push jobs: build: runs-on: ubuntu-latest steps: - uses: actions/checkout@v4 - run: npm test

Minimal push workflow

Before

name: CI on: push jobs: build: runs-on: ubuntu-latest steps: - run: echo hi

After format

name: CI on: push jobs: build: runs-on: ubuntu-latest steps: - run: echo hi

Navigate related CI/CD tools

Validate structure with validate GitHub Actions, format GitLab pipelines via format GitLab CI, or browse the CI/CD hub.

GitHub Actions formatter FAQ

YAML layout only

Are comments preserved?

No. js-yaml round-trip drops comments. Keep a copy if you rely on inline notes, or format with a comment-aware tool locally.

Does this run actionlint?

No — this only reformats YAML. Use validate-github-actions for structural checks, or actionlint in CI for expression and action rules.

What is the size limit?

512 KB per paste (same as DevOps tools). Split large monorepo workflows if needed.

CI/CD

GitHub Actions and GitLab CI — format YAML and check workflow/job structure in your browser.

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