Hi Rasmus,
Recently we received some related reports regarding the issue.
We apologize for the inconvenience it caused.
Please kindly check if it matches your scenario:
Description
Getting low quality images/texts when exporting to PDF using PowerPoint for Mac even with the highest quality PDF settings.
Environment
PowerPoint 2016 for Mac, version 16.14.1.
Update
A newly released build of Insider Slow version 16.15 (0701) has the fix.
The Insider Fast channel version 16.16 (180625) has fixed the issue too.
If you are unwilling to use pre-beta software (Insider Fast) you can use Insider Slow. Insider Slow delivers the upcoming release a little sooner than waiting for it to come through the regular update.
If it is your situation, we suggest you monitor this primary thread for the issue to get the latest update:
PowerPoint
export to PDF has tons of formatting issues
If it is not what you are experiencing, please share the following information with us for troubleshooting:
1.Your Mac version. (Apple menu>About This Mac)
2.Some related screenshots about the symptom.
Regards,
Tina