Powerpoint

Hi Aleisha, thanks for your query. Basically, the lowest resolution the Powerpoint image compression tool will allow is 96dpi and that's a good guide as to where you want to stop. Some designers claim to see the drop in resolution of the image and if you zoom in really close you can see the image has become "smeary" but for the majority of situations this resolution is fine for printing and projection. It is also a must if you have multiple high-res images in your presentations and you need to reduce the filesize - compressing the images to 96dpi is pretty much key to this.

Note that if you send the presentation to be professionally, ask the printers what resolution they want the images to be. If they don't specify a resolution, always go for the highest possible. You don't want a hundred bound full-colour presentations with horrible smeary images in the middle of them.

Finally, if all else fails, do a test colour print or project the presentation and see whether you think it is acceptable!

Hope this helps,

Anthony