What is a YAML formatter?

A YAML formatter restructures YAML with consistent indentation and spacing, making Kubernetes manifests, Docker Compose files, and CI configs easier to read and review.

Can I convert YAML to JSON?

Yes. Click To JSON to convert your YAML document into formatted JSON — useful for APIs and debugging.

Does this validate Kubernetes YAML?

It validates YAML syntax (structure and indentation). For K8s-specific schema rules, apply manifests with kubectl --dry-run=client after formatting.

Is my YAML sent to a server?

No. All formatting and validation runs entirely in your browser.

Developer

Free YAML Formatter & Validator Online

Format, validate, minify, and convert YAML to JSON. Built for Kubernetes manifests, Docker Compose, and GitHub Actions — all in your browser.

Tool workflow

1Input

Paste Kubernetes, Docker, or CI YAML configs

2Format

Beautify, validate, or minify with consistent indent

3Convert

Transform YAML to JSON for APIs and debugging

4Export

Copy or download formatted YAML

YAML Formatter & Validator

Format, validate, minify, and convert YAML to JSON. Perfect for Kubernetes, Docker Compose, and CI configs — runs in your browser.

Indent24 linesValid YAML

Input YAML

Output

apiVersion: apps/v1
kind: Deployment
metadata:
  name: vyomastack-api
  labels:
    app: api
spec:
  replicas: 3
  selector:
    matchLabels:
      app: api
  template:
    metadata:
      labels:
        app: api
    spec:
      containers:
        - name: api
          image: vyomastack/api:1.0
          ports:
            - containerPort: 8080
          env:
            - name: LOG_LEVEL
              value: info

How it works

Format — beautifies YAML with consistent indentation for K8s manifests and configs.

To JSON — convert YAML to JSON for APIs and debugging. Pair with Text Compare for config diffs.

Private — all processing runs locally. Your cluster secrets never leave your browser.

Related Tools

Frequently Asked Questions

What is a YAML formatter?: A YAML formatter restructures YAML with consistent indentation and spacing, making Kubernetes manifests, Docker Compose files, and CI configs easier to read and review.
Can I convert YAML to JSON?: Yes. Click To JSON to convert your YAML document into formatted JSON — useful for APIs and debugging.
Does this validate Kubernetes YAML?: It validates YAML syntax (structure and indentation). For K8s-specific schema rules, apply manifests with kubectl --dry-run=client after formatting.
Is my YAML sent to a server?: No. All formatting and validation runs entirely in your browser.