Export to PDF limitations

Hi , mlardner 

Unfortunately, in the use of Power BI, I didn't find a feature that could export a certain visual as a PDF separately.
If you are presenting on a computer, you can try exporting a Live PPT.

For more information, you can refer to :
Add a live Power BI report page to PowerPoint - Power BI | Microsoft Learn

Also, as mentioned above, you can try using paginated reports.

Paginated reports are designed to be printed or shared. They're called paginated because they're formatted to fit well on a page. They display all the data in a table, even if the table spans multiple pages. You can control their report page layout exactly. Power BI Report Builder is the standalone tool for authoring paginated reports for the Power BI service.

For more information, you can refer to :
A Step-by-Step Overview of Paginated Reports in Power BI (bluegranite.com)

Also for your needs, you can also publish your idea to our website to optimize this product:
Ideas (powerbi.com)

Thank you for your time and sharing, and thank you for your support and understanding of PowerBI! 

Best Regards,

Aniya Zhang

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