VSPIC
Developer Tools

YAML Linter — Structure Check & Normalize YAML

Lint YAML structure and indent — proxies yaml-formatter validation messages

How to Use This Tool

  1. Paste YAML into proxied yaml-formatter.
  2. Parser reports syntax failures — unbalanced quotes, bad indent.
  3. Select indent width and run normalize to fix drift.
  4. Re-run until validation messages clear.
  5. Minify only after syntax passes.
  6. Copy linted YAML into PR or kubectl apply buffer.

About This Tool

CI yamllint gates catch indent drift and syntax typos before kubectl apply — but authors want immediate feedback while editing pasted hunks from incident channels. VSPIC yaml-linter maps to type proxy, slug yaml-formatter — structure parse validation, indent normalization feedback, and minify on same client-side widget as yaml-formatter.

This page frames linter SEO while behavior matches yaml-formatter. Paste manifest, read validation messages for tabs and broken nesting, normalize indent, copy clean YAML into Git.

Common use cases

  • •Inspect HTTP headers and user-agent strings
  • •Analyze email headers for phishing investigation
  • •Generate strong passwords for staging environments

Why use VSPIC for ?

  • Real YAML parse validation via formatter proxy.
  • Indent normalize fixes common paste artifacts.
  • Client-side — unreleased manifests stay local.
  • Same engine as yaml-beautifier and yaml-formatter.
  • Immediate feedback without CI round trip.
  • Multi-document --- support.

Lint versus schema validation

Linter here means parse and indent hygiene. Kubernetes semantic validation needs kubeconform — complementary CI step.

Proxy to yaml-formatter

yaml-linter is type proxy, slug yaml-formatter.

Common lint failures

Tab indentation, mapping key without value, unclosed quotes, inconsistent list indent — parser messages guide fixes.

Relationship to yaml-beautifier

Beautifier emphasizes pretty output SEO. Linter emphasizes error messaging — same proxy widget.

Relationship to yaml-compare-tool

Format both versions before text-diff-checker — lint each side first.

GitHub Actions YAML

Deep nesting in workflow files benefits from lint before push — catches step indent errors.

Client-side privacy

Unreleased workflow secrets paths stay local — never commit secrets, lint paths only.

yamllint CI pairing

Browser lint for quick paste; yamllint -c config in pipeline for team rule enforcement.

Future policy lint UI

Custom rule packs may ship in dedicated handler.

Important notes & limitations

  • Syntax and indent lint — not kube schema rules.
  • No policy-as-code lint rules like yamllint config.
  • Does not verify image tags or resource limits.
  • Very large files may need CLI.
  • Tabs must be replaced with spaces manually if mixed.

Frequently Asked Questions

Yes. VSPIC offers this YAML linter at no cost with no account required. Results load in real time.

We do not permanently store your queries on our servers. Some tools run entirely in your browser; others fetch public data for the request only.

Yes. Open the page in any modern phone or tablet browser. Results work on Wi‑Fi and mobile data.

Yes. type proxy, slug yaml-formatter — validation and normalize included.

No. Syntax and indent only. Use kubeconform in CI.

No. Tabs are invalid YAML indentation.

No. Client-side parse and lint.

Yes — normalize mode re-indents with selected width.

type proxy, slug yaml-formatter in missing-tools-handlers.generated.ts.

Next step for your check

Continue with yaml formatter on VSPIC.

YAML Formatter

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