[Year 12 IPM] Compressing Powerpoint Files_OT

[Robert Hind]

Essentially you need to do what you do with a web page: 

You use a graphics program, such as the freebie IrfanView, to crop and resize the image to the size actually wanted on screen and save the image as a jpeg file with compression, usually 70% quality is fine, thus producing a small file.

Never insert a larger image into a PowerPoint slide and then resize within PowerPoint as PowerPoint then stores the whole of the original image unless you do remember to compress the picture.

As an example:

A single slide was made and a picture inserted 2823x2128 pixels and a file size of 2,412 KB. The image was resized to fit the slide. The saved ppt file was 2.4 MB

When that image was compressed within PowerPoint the saved ppt file size was 111 KB.

When the image was resized to 800x600 pixel and saved at 70% quality in IrfanView and then inserted and resized (slightly upwards) to fit the slide and saved, the ppt file size was 92.0 KB.

Sending this last ppt file to a compressed folder reduced the size to 65.6 KB

Have fun!

Robert Hind (Semi-retired)
Ex Ashwood and Traralgon


----- Original Message ----- 
From: "Donna Benjamin" <donna at cc.com.au>
To: "Year 12 Information Technology Processing and Management Teachers'Mailing List" <ipm at edulists.com.au>
Sent: Monday, September 11, 2006 7:14 PM
Subject: Re: [Year 12 IPM] Compressing Powerpoint Files_OT


> And make sure that any included images are screen resolution not print
> resolution... eg - make sure to save images at 72 DPI - not 300 DPI
> before inserting.
> 
> I've also reduced a presentation file with lots of images by 2 thirds
> just by taking screen shots of the image-rich montages I'd created, and
> inserting a single screen-resolution image instead of the 4 or 5
> high-res jpgs I'd used originally.
> 
> :)
> 
> On Mon, 2006-09-11 at 16:53 +1000, Mark Kelly wrote:
>> The quickest way to reduce any PPT by 90% is to remove the decorative 
>> pictures and sounds!
>> 
>> Laurie Savage wrote:
>> > As a follow up, I just got a 50% reduction in size of the VITTA Networks 
>> > ppt by sending to compressed folders.
>> > 
>> > LS
>> > 
>> > murch at tpg.com.au wrote:
>> >> Could someone please help me with compressing powerpoint files to a 
>> >> size small enough to send via email?  Can it be done and if so how?  
>> >> Much appreciated. Can email me direct if you wish.
>> >> Thanks in advance
>> >> Anne Mirtschin
>> >> Hawkesdale p12 College
> 
> -- 
> donna benjamin - executive director
> http://www.creativecontingencies.com/
> ph +61 3 9326 9985 | mob +61 418 310 414
> research - facilitation - web development 
> 
> _______________________________________________
> http://www.edulists.com.au - FAQ, resources, subscribe, unsubscribe
> IPM Mailing List kindly supported by
> http://www.vcaa.vic.edu.au - Victorian Curriculum and Assessment Authority and
> http://www.vitta.org.au  - VITTA Victorian Information Technology Teachers Association Inc
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.edulists.com.au/pipermail/ipm/attachments/20060913/b3b980fb/attachment.html