Validate GitLab CI Online — .gitlab-ci.yml Structure Checker
Structural checks for stages, jobs and script/trigger. Not a GitLab runner — validation stays in your browser.
Developer notes
Reserved keys (stages, variables, include, …) are not treated as jobs. Hidden jobs starting with . skip the script requirement. extends-only jobs emit a warning in v1. Does not fetch remote includes or execute pipelines. Issues and severity counts appear in the results panel after debounce (~300 ms).
When teams pick this route
Quick check of a pasted .gitlab-ci.yml snippet. Spot jobs missing script before push. Teach pipeline shape without a GitLab project. Pair with format-gitlab-ci after fixes.
Worked examples
Valid stages + unit job
Input
Validation result
Job without script
Input
Validation result
Navigate related CI/CD tools
Format YAML with format GitLab CI, validate Actions with validate GitHub Actions, or browse the CI/CD hub.
GitLab CI validator FAQ
Structural checks only
Same as GitLab CI Lint?
No. We do not call GitLab’s API or simulate a runner. Checks are structural (YAML + jobs/script) in your browser.
Are hidden jobs validated?
Jobs whose names start with . are skipped for the script requirement (templates). Other keys still follow reserved-key rules.
What about pages jobs?
pages is treated as a job and must satisfy script/trigger rules like other jobs.
CI/CD
GitHub Actions and GitLab CI — format YAML and check workflow/job structure in your browser.
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