GitHub Actions Workflow Validator.
Lint and validate GitHub Actions CI/CD workflows, trigger event blocks, and job step hierarchies.
Syntax Diagnostic
Line 1, Col 1Invalid YAML Syntax
Workflow Structure & Linting
Linting GitHub Actions Workflow Files (.github/workflows)
CI/CD pipeline workflows stored in .github/workflows/*.yml require exact syntax and mapping rules. Our GitHub Actions YAML validator checks for mandatory trigger events (including the notorious unquoted "on": boolean trap), valid runner environments (runs-on: ubuntu-latest), and sequential step execution syntax.
Frequently Asked Questions.
Everything you need to know about YAML to JSON conversion, syntax formatting, and privacy.
What does the GitHub Actions validator inspect?
It checks workflow triggers (especially the common unquoted "on:" boolean gotcha), jobs configuration, runs-on runners, action uses version pins, and sequential step syntax.
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