UML Sequence diagram Builder
The online sequence diagram builder let's you create sequence diagrams from simple code and turn it into SVG images. This tool can be used by coders and non-coders alike and no programming skills are required.
How to add sequence diagrams to Jira or Confluence?
You can integrate your diagrams in Jira, Confluence, Notion, GitHub, and many other tools using the Copy URL button. Then in the tool you are using add an image with the generated URL, you are done.