Kubernetes YAML Validator

Paste a Kubernetes manifest — single or multi-document — and catch the problems that make kubectl apply fail or silently misbehave: YAML errors, missing required fields, deprecated API versions, and production-readiness gaps. It runs entirely in your browser.

Kubernetes manifest input

Results

Results appear here as you type.

100% private — validation runs entirely in your browser. Your input is never uploaded.

apiVersion: apps/v1
kind: Deployment
metadata:
  name: web
  labels:
    app: web
spec:
  replicas: 3
  selector:
    matchLabels:
      app: web
  template:
    metadata:
      labels:
        app: web
    spec:
      containers:
        - name: web
          image: nginx:latest
          ports:
            - containerPort: 80

What it checks

• YAML syntax with line/column, multi-document aware.
• Required fields: apiVersion, kind, metadata.name.
• Deprecated/removed API versions (e.g. extensions/v1beta1).
• Kind-specific structure: Service selectors/ports, Ingress rules.
• Best practices: :latest tags, missing resource limits, missing probes.

A static check — for full schema validation against your cluster version, also run kubectl apply --dry-run=server or kubeconform.

Kubernetes YAML Validator

What it checks

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