DiagramPreview
Basic parserYAMLTree viewerConfig

YAML to Diagram

Paste YAML and inspect configuration hierarchy as a structured tree diagram.

Examples
YAML treeReady
Your YAML tree will appear here.

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How to use

  1. 1Paste YAML into the editor.
  2. 2Inspect the generated hierarchy.
  3. 3Use syntax errors to fix invalid indentation or values.

Common use cases

CI config reviewKubernetes YAML inspectionDocumentation examples

Related tools

SQL to ER Diagram

Convert CREATE TABLE SQL into a Mermaid ER diagram.

JSON Schema Visualizer

Inspect JSON Schema properties, types, required fields, and composition groups.

JSON Schema Form Preview

Turn JSON Schema properties, required fields, enums, and formats into a form preview.

FAQ

Does YAML share logic with JSON diagrams?

Yes. YAML is parsed first and then visualized through the same tree model.

YAML to Diagram helps make configuration files easier to read by turning nested values into a structured tree.

It is useful for CI workflows, Kubernetes manifests, static site config, and documentation examples where indentation matters.

The tool shares tree visualization logic with JSON to Diagram so future improvements can benefit both data formats.

Demo: preview workflow YAML as a tree

YAML indentation makes structure easy to write and easy to misread. A tree preview helps catch whether jobs, steps, environment variables, and nested configuration ended up under the intended parent.

  • Check arrays under steps, containers, rules, or hosts carefully.
  • Use the preview after copy-pasting snippets from documentation.
  • Review multi-document YAML one document at a time when possible.
name: CI
jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - run: npm test

Debugging: indentation is the real schema

Many YAML errors are not parse errors; they are valid YAML with the wrong hierarchy. The preview should make those silent structure mistakes obvious before a deployment or CI run.

  • Compare sibling keys visually when a value seems ignored.
  • Avoid tabs and mixed indentation.
  • For Kubernetes, confirm metadata, spec, and template levels before checking container fields.
spec:
  template:
    spec:
      containers:
        - name: api
          image: ghcr.io/acme/api:latest

Review checklist for YAML to Diagram

Use YAML to Diagram when you need to inspect source content visually before it becomes documentation, a pull request note, an incident write-up, or a handoff artifact. Visualize YAML documents as readable tree diagrams.

Before exporting, check that labels are readable, relationships match the source, generated examples do not contain private data, and the preview still makes sense after you edit the input.

Limits and troubleshooting

If the preview fails, reduce the input to the smallest complete example, confirm the format syntax, and then add sections back one at a time. Many rendering failures come from partial files, indentation mistakes, missing diagram headers, or copied snippets that depend on hidden context.

Treat the preview as a review surface rather than a source of truth. Generated diagrams, converted files, dashboards, and rule examples should be checked before they are used in production documentation or operations.

Example inputs to test

  • Workflow: name: preview steps: - install - build - verify
  • Kubernetes: apiVersion: v1 kind: Service metadata: name: diagram-preview spec: ports: - port: 80
  • Config: site: name: DiagramPreview locales: - en - zh-CN exports: svg: true png: true

Tool maturity

Basic parser

Basic parser

This tool focuses on fast structure inspection. Use it for review and debugging, then verify critical output before production use.

The maturity label is not a quality score. It tells visitors whether the tool is best for stable export, deeper debugging, quick parsing, or AI-assisted generation.