Exporting dashboards is not possible in the Cloud due to technical limitations in the Jira REST API. See this page for more details.
Exporting dashboards is supported in Jira Server and Jira Data Center.
Is does single issues, etc
To be precise, in Jira Cloud, you can export any number of issues (that can be result of a JQL query, some ad-hoc filter, a Scrum boards, etc.), not only a single issue.
I've found that I have to print from my browser window rather than the actual Jira application. I use Chrome, so when I click on the ellipses next to the address bar there is an option to print. It works well, the pages are rendered as 81/2 by 11 without the reports overlapping to another page.
Hi All! We’re excited to share the launch of an announcement banner that lets Jira site administrators communicate directly to their users across their Jira Cloud instance. ...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events