GitHub Actions Workflow Validator
Format workflow YAML and catch missing jobs, runners, triggers, and steps before committing.
Batch workspace
Format multiple files locally in one run.
How to use the GitHub Actions Workflow Validator
Paste code or file
Paste your raw YAML text or upload directly.
Configure options
Choose indentation, dialect, or formatting preferences.
Format & export
Click format, then copy, download, or inspect in tree view.
What is a GitHub Actions Workflow Validator?
Format workflow YAML and catch missing jobs, runners, triggers, and steps before committing. This tool re-indents and organizes code according to standard style conventions while checking for syntax validity. Everything executes 100% inside your browser, guaranteeing zero latency and complete privacy for API keys, user tokens, and confidential database schemas.
Options Explained
| Option | Description |
|---|---|
| Output mode | Choose formatted YAML or a JSON report with workflow diagnostics. |
Frequently Asked Questions
Does this run my GitHub Actions workflow?
No. It only parses, formats, and statically checks the workflow YAML.
What does the validator check?
It checks the workflow name, trigger, jobs, runners, and that each job has actionable steps.
Can I format workflow YAML?
Yes. The default output normalizes the complete workflow as readable YAML.
Does it support reusable workflows?
It validates the common jobs and steps structure while preserving other workflow fields.
Is my workflow uploaded?
No. Processing is entirely local in your browser.