• Learn how to use the tools and panels, find and add shapes to your diagram, add connectors, and more in this introduction to draw.io. Diagramming software ca.
  • Draw.io is a free online diagram drawing application for workflow, BPM, org charts, UML, ER, network diagrams. Draw.io is an online image editor that provides its user fast, easy and free way to create simple diagrams without the need to install anything on their computer. Everything that Draw.io offers can be quickly accessed via your web browser.
  • With the intuitive UML diagram editor you can draw Deployment Diagram in seconds. The free UML editor comes with no ad, no limited period of access and no limitations such as, number of diagrams, number of shapes and etc. You own the diagrams you created for personal and non-commercial purposes.

SequenceDiagram.org is an online tool / software for creating UML sequence diagrams. Founded in 2014 with the purpose to improve the efficiency when creating and working with sequence diagrams by combining text notation scripting and drawing by clicking and dragging in the same model.

All parsing, processing, and drawing is done client side. The benefit of this is that SequenceDiagram.org is fast and convenient to work with; it also doesn’t transfer your diagram data over the Internet like many other sequence diagram tools on the market. This also means that it is possible to work with the tool offline.

The tool is developed, maintained, and used by people who create a lot of sequence diagrams in their daily work. If you have any question / comments / suggestions / bugs please contact info@sequencediagram.org. The more feedback we get the better we can prioritize.


Privacy and data protection information

The tool itself does not collect data, however services it relies on such as Content Delivery Network, hosting, and cloud storage does. See privacy policy for details.


Are diagrams/scripts created using SequenceDiagram.org subject to any license?

Uml Diagram Online Draw Io

No license is imposed by SequenceDiagram.org on the generated output. However, like with all images containing text, the fonts used might. The default font used in diagrams is the default sans-serif font selected by your browser. You can specify a different font using the fontfamily keyword, see help for more information. See LICENSE for details.


How do I generate a PDF of my sequence diagram?

Zoom to a chosen level in the editor and Print to PDF from your browser. The print css makes sure to only show the diagram on the page.

Versioning is built into Confluence, and diagrams attached to pages using the draw.io app for Confluence takes advantage of this. When you edit a diagram, the draw.io app creates a new page version so you can easily restore an older version of your diagram. Create an activity diagram with draw.io. Use the shapes from the UML shape library to create your activity diagram. In the example below, I’ve created an activity diagram for the users of a habit tracking app. I previously created a use case diagram to get a rough idea of what actions were needed.


Are there any example sequence diagrams?

Yes, clicking the help menu and selecting 'Instructions' will show examples of all possible diagram elements. A copy icon is available for copying the text notation.


Is the codebase of SequenceDiagram.org open source?

No, the codebase is currently not available under any open source license


Can I run the SequenceDiagram.org tool in my company's private network (on-premises)?

Yes, by donating 400$ you are licensed to run the SequenceDiagram.org tool and its REST-like API inside your company's network (enterprise license). You are also eligible to receive any new published versions of the software for the duration of 1 year from the donation date by request. Your donation is highly appreciated and allows us to keep SequenceDiagram.org online and free for everyone to use. Please contact info@sequencediagram.org for any questions.
The software is delivered in three formats:

  • A Node JS application with the Sequencediagram.org tool and a REST-like API for integration with other services, see README.txt for details
  • A war file with the Sequencediagram.org tool for deployment in a Java Servlet Container such as Tomcat, Jboss, Wildfly, Jetty, etc
  • A zip file with the Sequencediagram.org tool for static web page hosting inside the DocumentRoot of a web server such as Apache, IIS, etc, or static on any cloud provider

What libraries are used by SequenceDiagram.org?

Online Tool To Draw Uml Diagrams

  • lz-string is used to create URLs for sharing sequence diagrams. LICENSE
  • Canvas2Svg is used to export the diagram into SVG file format. LICENSE
  • CodeMirror is used as the text editor. LICENSE
  • Font Awesome is used to provide icons for the icon participants. LICENSE
  • Material Design Icons from the Community is used to provide icons for the icon participants. LICENSE
  • Material Design icons by Google (included in materialdesignicons.com collection) is used to provide icons for the icon participants. LICENSE
  • Font Awesome 5 Free is used to provide icons for the icon participants. LICENSE
  • RBush is used for collision detection calculations for onmousemove events. LICENSE
  • MSAL.js from Microsoft is used for authentication towards Microsoft services.
  • OneDrive.js from Microsoft is used for file picker for OneDrive and SharePoint.
  • platform.js from Google is used for authentication towards Google services and file picker for Google Drive and Team Drives.