Here are a couple of things to try:
(1) If all the text is in placeholders, you can go to the slide master
and change the font there.
(2) Try going to the Format menu and choosing Replace Fonts. This should
work if you just want to change the font face, not the font size or any
other characteristics.
(3) If all else fails, a VBA script could be written to adjust the font
of every shape with text.
--David
--
David M. Marcovitz
Microsoft PowerPoint MVP
Director of Graduate Programs in Educational Technology
Loyola College in Maryland
Author of _Powerful PowerPoint for Educators_
http://www.PowerfulPowerPoint.com/
=?Utf-8?B?Q2hyaXMgSmFycmV0dA==?= <Chris
(E-Mail Removed)> wrote in
news:7AE51968-1218-43E9-A637-(E-Mail Removed):
> I have a presentation (a countdown timer) with 300 slides. Is there
> any way to change the font and size on all the slides at once instead
> of going through each slide and changing each text box manually?
>