Pretty self explanatory three option: -Best for Printing(220 ppi) = High quality -Best for viewing on screen(150 ppi) = Medium quality -Best for sending in e-mail(96 ppi) = low quality 'Remove cropped picture region' option, basically if you can't see it, it doesn't keep it.

Both PowerPoint and Impress slides are specified in inches or cm, rather than pixels, and these real-world units are somewhat arbitrary given that the presentations are normally scaled proportionally to fit whatever screen they're shown on. (Or non-proportionally, if somewhat's got the screen settings wrong) I'd go with an image that's big enough in pixels for any screen you're likely to show it on; just scale it proportionally to fill the background. But for best results try to match the proportions of the presentation itself to the screen you're going to use.

Both PowerPoint (at least up to 2003) and Impress (latest version in mid 2011) 'sized for on-screen show' slides defaulted to a 4:3 ratio, which is too tall for modern widescreens. Metro arms. In PowerPoint 2010 (and perhaps 2007?) you have the choice of 4:3, 16:9, 16:10. The reason everyone is TOTALLY confused here is that Powerpoint uses 72 POINTS Per Inch (28.346 per cm) NOT PIXELS. It works with the old print standards. If you take the standard 960x720 document size of 25.4cm x 19.05cm and do the maths it doesn't work out and funnily enough the amount it's out by is EXACTLY the ratio of standard points (as used in font sizes) to pixels eg: 36pt = 48px (this isn't an EXACT ratio but near enough for this) So take the dots per cm 28.346 * width in cm 25.4 should = 960 but actually = 720.

Divide this by 36 and times by 48 and WOOHOO we get the actual 960 pixels! Powerpoint works in a completely different unit than pixels so if you look at the standard presentation.xml within the.pptx file you'll see this line that defines the standard slide size: p:sldSz type='screen4x3' cy='6858000' cx='9144000'/ This 91000 size is the standard 960x720 pixel template. (25.4cm x 19.05cm) if you get out your calculator you can work out that a 1280x720 template requires you to edit the.xml to read: p:sldSz type='screen4x3' cy='6858000' cx='12192000'/ You can do this by right clicking the.pptx and opening it with winrar; ) Alternatively just use 33.86cm x 19.05cm.

It's a lot quicker:D For 1920 x 1080 use 50.8cm x 28.575cm If you want to check my settings use these sizes and save the slide out as a jpeg. You'll find they are correct: ). Try: page size 50.80cm x 28.57cm. It seems to work for me so far. I created a full HD JPEG in Photoshop (1920x1080 pixels at 72dpi pixels per inch).

Then created a new Impress presentation. Right clicked the page and entered: slide > page setup. At first I tried 16cm across by 9cm high and then doubled each in turn, until I reached largest cm size possible (300cm is largest so finally reached 256cm x 144cm) but when I inserted the full HD JPEG, the image was really small. So I selected original size and it was still really small. So I investigated the JPEG size with a right click and it was 50.80cm x 28.57cm) so: Changed page size to 50.80cm x 28.57cm. Then inserted picture. (have to right click > position & size and play with the settings a bit.