Sequence Diagram Generator

Create UML sequence diagrams from text descriptions. Edit the code on the left and see the diagram update in real-time.

Diagram Code
Untitled Diagram

Syntax Guide

Basic Syntax

  • participant ActorDefine an actor
  • Actor->>Actor: MessageSolid arrow
  • Actor-->>Actor: MessageDashed arrow
  • Actor->Actor: MessageOpen arrow
  • Actor-->Actor: MessageDashed open

Advanced Features

  • Note left of ActorLeft note
  • Note right of ActorRight note
  • Actor-xActor: MessageLost message
  • loop/endCreate a loop
  • alt/else/endAlternative paths

Examples

Basic Application Flow

A standard user-app-server-database interaction pattern

Authentication Flow

User login process with success and failure paths

Microservices Architecture

Communication between distributed services

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