YAML Viewer

Parse, format, and validate YAML in your browser. Optional alphabetical key sorting. Copy the result as YAML or JSON. Runs in your browser. No data sent.

YAML input242 chars

Sort keys

Formatted YAMLvalid

deployment:
  name: api
  replicas: 3
  image: ghcr.io/example/api:latest
  env:
    - name: PORT
      value: '8080'
    - name: DATABASE_URL
      valueFrom:
        secretKeyRef:
          name: db
          key: url

How It Works

1
Paste YAML
Any YAML. Kubernetes, Helm, CI workflows, configs.
2
View parsed output
Re-emitted canonically, with validity status.
3
Toggle sort keys
Sort alphabetically to spot diffs and standardize files.
4
Copy YAML or JSON
Export the cleaned YAML or the JSON equivalent.

Use Cases

Validate Kubernetes manifests
Catch YAML syntax errors before `kubectl apply` rejects them.
Normalize for diffing
Sort keys to make two YAML files diff cleanly even if authored in different order.
Convert YAML to JSON
Read a YAML config but feed it to a JSON-only tool or API.
Inspect Helm values
Reformat a Helm values.yaml for review before committing.

Frequently Asked Questions

It parses your YAML in the browser and re-emits it as cleanly formatted YAML. With optional alphabetical key sorting and no anchor/alias indirection. You can also copy the parsed document as JSON.

A linter checks style rules. This viewer goes further: it parses to a real data structure, then re-emits as canonical YAML. If your file is invalid, the parser error tells you exactly where.

The viewer loads the first document by default. For multi-document files (common in Kubernetes), split them with `---` and view each separately.

No. Comments are stripped on re-emit because js-yaml's dump path doesn't track them. If you need comment-preserving formatting, edit your YAML directly.

Yes. Click "Copy as JSON" to copy the parsed document as pretty-printed JSON. Useful for plugging YAML config into JSON-only tools or APIs.

No. Parsing and formatting happen entirely in your browser.

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YAML Viewer

How It Works

Paste YAML

View parsed output

Toggle sort keys

Copy YAML or JSON

Use Cases

Validate Kubernetes manifests

Normalize for diffing

Convert YAML to JSON

Inspect Helm values

Frequently Asked Questions

Done generating test data? Now automate the tests.