1Examples: choose an example or paste your own CloudFormation YAML or JSON.
2Review the rendered relationships, field names, resource references, or request order.
3Export the SVG/PNG or keep the source with your documentation.

Common use cases

API documentation and debuggingArchitecture and platform docsAI-generated draft review before publishing

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FAQ

Can I use generated or production-like source?

Yes, but remove secrets, tokens, private hostnames, and customer data before pasting any source.

Use this tool to turn existing developer source into a visual explanation that is easier to review in docs, tickets, and architecture notes.

Start with a small sample, verify the relationships, then paste the larger source once the workflow is clear.

Keep the source next to exported SVG or PNG files so diagrams remain reviewable and editable.

Demo: visualize CloudFormation resources and refs

CloudFormation templates are easier to review when resources, DependsOn, Ref, and GetAtt relationships are visible as a diagram.

Group resources by compute, network, storage, and permissions.
Show Ref and GetAtt edges separately when possible.
Use the diagram before reviewing large nested stacks.

Resources:
  ApiFunction:
    Type: AWS::Lambda::Function
  ApiRole:
    Type: AWS::IAM::Role
  ApiLogGroup:
    Type: AWS::Logs::LogGroup

Review checklist: infrastructure diagrams need risk markers

A CloudFormation diagram should help reviewers spot public access, IAM scope, destructive replacement, and hidden dependencies.

Flag SecurityGroup ingress from 0.0.0.0/0.
Review IAM policies with wildcard actions or resources.
Compare diagram changes with the change set before deployment.

Action: s3:*
Resource: *
Risk: broad IAM policy

Review checklist for CloudFormation Template Diagram

Use CloudFormation Template 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. CloudFormation Template Diagram: Visualize AWS CloudFormation resources and references from template YAML or JSON.

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

Serverless API: Resources: ApiGateway: Type: AWS::ApiGatewayV2::Api Properties: Name: OrdersApi OrdersFunction: Type: AWS::Lambda::Function Properties: Handler: index.handler Runtime: nodejs20.x O...
Web app: Resources: LoadBalancer: Type: AWS::ElasticLoadBalancingV2::LoadBalancer WebTargetGroup: Type: AWS::ElasticLoadBalancingV2::TargetGroup WebService: Type: AWS::ECS::Service Properti...
Network stack: Resources: Vpc: Type: AWS::EC2::VPC PublicSubnet: Type: AWS::EC2::Subnet Properties: VpcId: Ref: Vpc PrivateSubnet: Type: AWS::EC2::Subnet Properties: VpcId: Ref: Vpc NatGateway: T...

Tool maturity

Advanced preview

Advanced parser

This tool extracts useful structure and relationships from developer input. Complex edge cases should still be checked against the source.

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.