Generally presentation files gets bigger in size due to the insertion of large image files. Though in older versions of PowerPoint there was no provision of image compression but this is not the case with the recent versions of the PowerPoint. Recent PowerPoint version can compress the images thereby bringing down the size of presentation files.
Tips from VirginTech.org
Now for reducing your presentation file size up to 50 % just follow these three simple steps.
- Try reducing the resolution of the images in your presentation, this will amazingly bring down the presentation file size. Images at lower resolution wouldn’t print that good as they they would print with higher resolution but there is no point of keeping higher resolution images in your presentation as long as screen is your primary viewing medium.
- Avoid using BMP & TIFF files, use JPEG, PNG, GIF. PNG & JPEG have good internal compression mechanisms.
- You might have noticed sometimes while working on your presentation that file size gets bigger, well this is due to auto saves. So for avoiding this save the file by going to “Files” and then to “Save As”.
Shahab khan is a Tech blogger from India & a founder of VirginTech. He blogs about Technology, internet, Social media, computer tips & tricks and Web 2.0. 
{ 17 comments… read them below or add one }
I just stopped by your blog and thought I would say hello. I like your site design. Looking forward to reading more down the road.
Great, its working ..Thanks.
Nice tips,keep up the good work!
Thanks for the appreciation guys, i really love to hear back from my visitors!
Great stuff man!
Thanks for the share, its great:-)
Hey shahab, thanks for sharing this. I’ve bookmarked your blog:-)
Thats good nishant and ya Stay tuned to VirginTech for more great updates
This is great buddy! Keep writing good stuff:-)
Thanks for your comment cyrus ….BTW stay tuned there is lot more to come!
Nice tips.
converting PowerPoint to Flash will also reduce up to 90%file size of original file size. Such as ppt2flash:
sameshow.com
Liked your stuff really, keep up the good work!
@simon, Thanks for the appreciation simon!
Great article , i would implement these on my ppt’s definitely.
Thanks a ton buddy, this is really great!
I would love to see more on this topic from your side.
Thanks steve!
Just stay tuned there is lot more to come!
Great article dude, keep up the good work!