Tool directory
Developer Diagrams
Create diagrams for architecture notes, API flows, dependency maps, and engineering docs.
Available tools
31Postman Collection to Sequence Diagram
Postman Collection to Sequence Diagram: Convert Postman collection JSON into a readable API request sequence diagram.
HAR File to Sequence Diagram
HAR File to Sequence Diagram: Turn browser Network HAR exports into request sequence diagrams for debugging and documentation.
HAR File Viewer
Preview HAR request timelines, status codes, slowest calls, and host breakdowns.
Sequence Diagram Preview
Preview sequence diagrams from Mermaid sequenceDiagram syntax.
API Error Flow Diagram
Turn API status codes, failure conditions, retry rules, and recovery actions into a clear error flow diagram.
OpenAPI to Sequence Diagram
Convert OpenAPI paths into a Mermaid sequence diagram locally.
package.json Dependency Diagram
Visualize package.json dependencies, devDependencies, peerDependencies, and optionalDependencies.
Docker Compose Diagram
Convert Docker Compose services and dependencies into a readable architecture diagram.
CloudFormation Template Diagram
CloudFormation Template Diagram: Visualize AWS CloudFormation resources and references from template YAML or JSON.
Graphviz DOT Preview
Render DOT graphs into SVG directly in the browser.
D2 Preview
Preview D2 architecture diagrams and service maps in a focused workspace.
Kubernetes Manifest Visualizer
Inspect Kubernetes manifests as resource trees for deployments, services, ingress, labels, and namespaces.
Terraform Architecture Diagram
Visualize Terraform resource blocks and references as a software architecture diagram.
Kubernetes Service Topology Diagram
Visualize Ingress, Service, Deployment, and Pod relationships from Kubernetes YAML.
Regex Railroad Diagram
Turn regular expressions into simple railroad-style diagrams for documentation and code review.
GitHub Actions Workflow Diagram
Turn GitHub Actions YAML jobs, needs, and steps into a readable workflow diagram.
CI/CD Pipeline Generator
Generate a pipeline diagram from GitHub Actions, GitLab CI, or simple step lists.
Cron Expression Visualizer
Visualize cron fields, schedule intent, and documentation notes.
C4 Model Diagram Generator
C4 Model Diagram Generator: Generate C4-style system context, container, and component diagrams from simple text.
JWT Decoder Diagram
Decode JWT header, payload, signature, and claims into a readable diagram.
cURL Command Parser
Parse cURL commands into method, URL, headers, query parameters, and request body preview.
URL Query Parser
Decode URL query strings, inspect UTM parameters, and review API query payloads.
Dockerfile Visualizer
Visualize Dockerfile build stages and instructions as a step-by-step diagram.
.env Diff Checker
Compare .env with .env.example and find missing, empty, or duplicate variables.
Helm Values Visualizer
Inspect Helm values.yaml as an expandable structure for chart review and documentation.
HTTP Header Parser
Parse HTTP response headers and review cache, CORS, content type, and security hints.
Nginx Config Visualizer
Visualize nginx server, location, proxy_pass, and upstream relationships.
Nginx Location Tester
Test Nginx location precedence for exact, prefix, ^~, and regex routing blocks.
OpenTelemetry Trace to Sequence
Convert OpenTelemetry spans JSON into a Mermaid sequence diagram for request flow review.
Log to Sequence Diagram
Turn simple service call logs into a Mermaid sequence diagram.
AsyncAPI Event Flow Diagram
Convert AsyncAPI channels into producer, channel, and consumer event flow diagrams.
Priority workflows
Start with these high-value tools
Postman Collection to Sequence Diagram
Postman Collection to Sequence Diagram: Convert Postman collection JSON into a readable API request sequence diagram.
HAR File to Sequence Diagram
HAR File to Sequence Diagram: Turn browser Network HAR exports into request sequence diagrams for debugging and documentation.
API Error Flow Diagram
Turn API status codes, failure conditions, retry rules, and recovery actions into a clear error flow diagram.
OpenAPI to Sequence Diagram
Convert OpenAPI paths into a Mermaid sequence diagram locally.
Docker Compose Diagram
Convert Docker Compose services and dependencies into a readable architecture diagram.
D2 Preview
Preview D2 architecture diagrams and service maps in a focused workspace.