Markdown ↔ Jira/Confluence Converter

You write the release note in Markdown, paste it into the ticket description and Jira shows the raw asterisks: instead of bold urgent you get a pair of asterisks stuck to the word. Jira and Confluence wiki markup predates Markdown and uses different symbols. Paste your text here, pick the direction and the result comes out ready to drop into the ticket.

The conversion covers headings h1 through h6, nested lists, checkbox tasks, single-line and multi-line quotes, links, images, horizontal rules and whole tables, header row with double pipes included. Fenced blocks become code blocks carrying the language from the fence, and their contents pass through untouched: no asterisk inside a shell snippet turning into bold.

The detail that trips up almost everyone is the inverted emphasis. In Markdown one asterisk means italic and two mean bold; in Jira a single asterisk is already bold and italic uses underscores. Loose curly braces need a backslash too, otherwise Jira reads them as a macro. The swap button flips the direction and moves the output back into the input, handy for checking the round trip.