1Examples: choose an example or paste your own TypeScript interfaces.
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

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

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 API response interfaces

TypeScript interfaces become easier to review when nested object references and optional fields are visible. This is helpful for SDK docs and frontend/backend contracts.

Show optional properties clearly.
Keep aliases and interfaces connected when one references another.
Use the diagram before changing public SDK types.

interface ApiResponse<T> {
  data: T;
  error?: ApiError;
}
interface ApiError { code: string; message: string; }

Review checklist: type shape can break consumers

A type diagram helps reveal consumer impact before a field is renamed, made required, or changed from scalar to object.

Treat optional-to-required changes as breaking for callers.
Review union types with example values.
Document generic parameters when they affect returned data.

Before: user.name?: string
After: user.name: string
Risk: callers that handle missing names

Review checklist for TypeScript Interface Visualizer

Use TypeScript Interface Visualizer when you need to inspect source content visually before it becomes documentation, a pull request note, an incident write-up, or a handoff artifact. TypeScript Interface Visualizer: Visualize TypeScript interfaces, type aliases, fields, and references for API and SDK docs.

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

API response: export interface ApiResponse<T> { requestId: string; data: T; error?: ApiError; } export interface ApiError { code: string; message: string; retryable: boolean; }
Checkout types: export interface CheckoutRequest { cartId: string; paymentMethodId: string; shippingAddress: Address; } export interface Address { line1: string; city: string; country: string; pos...
SDK options: export type ClientOptions = { baseUrl: string; timeoutMs?: number; retries?: number; auth: AuthOptions; } export type AuthOptions = { token: string; refreshToken?: string; }

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.