Sequence Composer

Create clear, elegant sequence diagrams with a tool designed for precision and ease of use. - Add, remove, and reorder lifelines, messages, and notes. - Group messages using standard UML group types. - Split message groups into separate sections with optional labels. - Edit elements using the inspector panel. - Style messages with different arrowhead types and solid or dashed lines. - Flip message direction with a single button tap. - Activate and deactivate lifelines. - Customize colors and column width, with separate light and dark color schemes. - Copy color schemes between diagrams. - Export diagrams as PNG images. - Import and export Mermaid files. - Adding lifelines Tap the lifeline button in the toolbar. Drag lifelines left or right to change their order in the diagram. - Adding messages Select two lifelines and tap the message button in the toolbar. Selecting a single lifeline creates a recursive message. Messages can also be created by dragging from one lifeline to another. Drag out and back to the same lifeline to create a recursive message. After adding a message, drag it up or down to change its order. - Creating message groups Switch to message group mode in the toolbar, then drag around the messages you want to include. Messages can later be added to or removed from a group by dragging them into or out of the group. - Adding notes Tap the note button in the toolbar. Notes are pinned to the lifeline immediately to their left. Drag notes to move them to a different lifeline or change their order.