LibreOffice Impress
Black out the screen
To black out the screen in LibreOffice Impress, press B. The keys are the same on a Mac.
Where it works: Slide show
The period key does the same. Any key or mouse wheel brings the slide back.
Every documented variant
| System | Environment | Keys |
|---|---|---|
| Mac | Desktop app | B |
| Windows | Desktop app | B |
Where this comes from
Shortcut Keys for LibreOffice Impress - LibreOffice Help
Documentation checked on 2026-09-14. That is a documentation review, not a test run inside the application.