Format Kubernetes YAML — Multi-Doc Manifests

Pretty-print Kubernetes manifests in your browser, including multi-document YAML separated by ---. Choose indent 2 or 4. Comments are dropped by the js-yaml round-trip. Not a generic YAML beautifier — for that use beautify YAML.

Options

Indent

Format results

Ready

Paste Kubernetes manifests or click Format — formatted output appears in the editor when the run completes.

Kubernetes YAML

0chars0 B1lines

Formatted YAML

0chars0 B1lines

Formatted Kubernetes YAML appears here…

Formatting runs locally with js-yaml — nothing is uploaded.

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Kubernetes YAML formatter — multi-doc manifests

Normalize indentation on Kubernetes manifests before review or paste into tickets. Supports multi-document streams; not a generic YAML beautifier.

Developer notes

• Pretty-prints multi-document Kubernetes manifests. • Auto-format on paste/upload/sample; manual edits use the Format button (⌘↵). • YAML # comments are dropped by js-yaml — a soft warning appears when the input likely had comments. • Pair with validate-kubernetes for kind-aware checks.

Options

Indent width

Spaces per indentation level in the dumped YAML (2 or 4).

When teams pick this route

• Clean up hand-edited Deployment/Service snippets before a PR. • Normalize multi-doc kubectl get -o yaml dumps for reading. • Align indent 2 vs 4 across pasted examples. • Pair with validate Kubernetes for structural checks.

Worked examples

Compact Deployment → indented

Before

apiVersion: apps/v1
kind: Deployment
metadata:
  name: web
  labels: {app: web}
spec:
  replicas: 2
  selector:
    matchLabels: {app: web}
  template:
    metadata:
      labels: {app: web}
    spec:
      containers:
      - name: web
        image: nginx:1.27
        ports:
        - containerPort: 80

After format

apiVersion: apps/v1
kind: Deployment
metadata:
  name: web
  labels:
    app: web
spec:
  replicas: 2
  selector:
    matchLabels:
      app: web
  template:
    metadata:
      labels:
        app: web
    spec:
      containers:
        - name: web
          image: nginx:1.27
          ports:
            - containerPort: 80

Multi-document stream preserved

Before

apiVersion: v1
kind: ConfigMap
metadata:
  name: app-config
data:
  LOG_LEVEL: info
---
apiVersion: v1
kind: Service
metadata:
  name: web
spec:
  selector:
    app: web
  ports:
  - port: 80

After format

apiVersion: v1
kind: ConfigMap
metadata:
  name: app-config
data:
  LOG_LEVEL: info
---
apiVersion: v1
kind: Service
metadata:
  name: web
spec:
  selector:
    app: web
  ports:
    - port: 80

Navigate related Kubernetes tools

Validate structure with validate Kubernetes, format Helm values via format Helm values, or open the Kubernetes hub. For generic YAML see beautify YAML.

Kubernetes formatter FAQ

Multi-doc YAML layout

When should I use beautify YAML instead?

Use beautify YAML for generic YAML (Compose, CI configs, data files). Use format Kubernetes when you specifically want multi-doc Kubernetes manifests pretty-printed in this cluster.

Are comments preserved?

No. js-yaml parse + dump drops comments. Keep a copy if you rely on inline documentation.

Does it run kubectl or apply to a cluster?

No. Formatting is entirely in-browser. Nothing is sent to a cluster or API server.

What is the size limit?

512 KB per paste. Split large multi-doc dumps before formatting.

Kubernetes

Multi-doc manifests, structural validate, Ingress/Deployment starters, and Helm values formatting.

Validate Kubernetes YAML

Generate Kubernetes Ingress

Generate Kubernetes Deployment

Format Helm values.yaml

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