Check your PDF viewer first
Open the PDF full screen and press the right and left arrow keys on the keyboard. If the viewer moves one page each time, Next and Prev on the phone will do the same. If the arrow keys only scroll within a page, switch the viewer to full screen or use another viewer before you present.
Pointing at a PDF
The swipe pointer, the double-tap highlight and the long-press lines are drawn on the computer screen above the viewer. Lines fade after a few seconds and the PDF file is not changed.
On Windows and on a Mac
- Windows 10 (64-bit) or later: if a firewall prompt appears when PresentSync starts, allow it.
- macOS 13 or later: allow PresentSync under Privacy & Security > Accessibility if macOS asks, so the viewer receives the slide keys.
Set it up in 3 steps
- Install. PresentSync on your iPhone or Android phone, and the desktop app from the download page on the computer; sign in by scanning its QR code.
- Join. Start a meeting and scan the meeting QR code with the phone.
- Present. Open the PDF full screen, keep the viewer in front and tap Next or Prev.
What to expect
- The phone does not show the pages; it is a remote, not a second screen.
- Have the original deck? PowerPoint, Keynote, Google Slides and WPS work too: see the list of supported apps by computer.
If the PDF pages do not turn
- Click the viewer once so it is the active window, and check that it is in full screen.
- Press an arrow key on the keyboard: if the page does not turn, the viewer does not page with the arrow keys.
- If the phone does not connect, see why the phone won't connect.
Common questions
Which PDF viewer works with PresentSync?
Any viewer that turns pages with the arrow keys in full screen. Test it by pressing the arrow keys on the keyboard before you present.
Does drawing on the PDF change the file?
No. The pointer, highlight and lines are drawn on the computer screen and fade after a few seconds; the PDF is not changed.
Can I see the next page on my phone?
No. The phone is a remote, not a second screen: it shows no pages, previews or notes.
Last updated 2026-11-15