Resiznig large images

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In SnagIt, when I try to take a very large image and shrink it down to use in PowerPoint, the image loses its resolution at about 35% and becomes blurry. Is there a good way to get sharper images from a large original?
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Erik Nelsen

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Posted 10 months ago

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Rick Stone

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Make the original as close as you can to the size you need in the end?

You might find the concepts in the article linked below helpful.

Click here to view

Cheers... Rick :)
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Why are you resizing the image first in Snagit?

PowerPoint can easily resize images.

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Do you need the whole picture content? If not crop it to a more reasonable size then your resizing will not change the resolution so much. Also what file format are you using? That can influence how the resolution is maintained. A bit mapped image (e.g. JPEG) has dots separated with space. Condensing the image too much jambs the dots together and causes the loss of resolution. If you save it as a vector type image then the contents of the image are created as mathematical formulas and can be resized with little or no resolution loss. The encapsulated postscript (eps) is a vector graphic but support has been discontinued in Office due to security concerns. Save as an Enhanced Windows Metafile (.emf) and PowerPoint will be happy with it and so will you for it is a vector graphic file type.
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Almost any image editing software available has got the resizing alternative provided, and that's because resizing photos is quite a typical task. Resizing is frequently needed to save file area, in the development of expert presentations as newsletters or maybe PowerPoint presentations, inserting photographs into documents, social media history pictures, as well as the list goes on. Resizing, particularly enlarging, can easily shoot blurring or even distortion of the picture. This issue could be stayed away from and we are intending to teach you how.
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Joe Morgan

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Importing an image directly, without re-scaling it first. Should be a good enough option in most cases.
Photoshop can re-scale images better than most programs.So there are exceptions where I'd prefer to re-scale them myself.
There are a number of factors affecting a PowerPoint presentation. 

PowerPoint can create a misleading representation/canvas view of what you're actually doing/producing in the long run.

A Slide is scaled to 1280 x 720 by default. In the editor.

Yet, the default slide is actually 13.333 X 7.5 inches. This is the equivalent of a 4000 X 2250 pixel image. So the slide is actually much larger than what you see at 100% scale.

If you export the images you’ve imported and placed in that slide. PowerPoint exports them at 1280 x 720 by default. Which reduces the sharpness of larger images. The larger the image, the greater the degradation.

Yet, if you record a slide show. The monitors resolution, dictates what resolution the image appears at. It’s resized to fit the monitor. So a higher resolution monitor can display/record/produce a higher quality image.

If you look at the image below. There are 2 separate screen shots of a recording in progress. The top one is being recorded on a 1280 x 720 monitor. The lower one is recording at 2560 x 1440. If you click on that image and view it at 100% Scale. You will see the lower image is sharper and more detailed than the top one. Yet the PowerPoint settings are identical.

If you were to record that same presentation on a 4K monitor. Which is 3840 x 2160 pixels. The image would look better yet. As it would be scaled closer to 100% of its native resolution.

So the workflow can/will dictate finial output quality. You need to consider these factors when creating a presentation.

I’m not a PowerPoint user. So I may be overlooking something?

 However, the resolution of your Images, Video Dimensions/Slide dimensions, and other factors are all relative. So I feel my information is sound. If I’m incorrect, I welcome any corrections others can offer.


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Erik Nelsen

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Thanks for all the good tips, everyone!  I have the same issue when resizing images in PowerPoint. The problem is that I'm starting with high-resolution images from our photo library (2Mb-4Mb each). To get them to a reasonable size for a ppt slide, I need to reduce the original to about 25% of the original size. I don't ave a powerful program like Photoshop, which I'm sure could do this. I did some testing in PowerPoint and SnagIt. The 25% reduction in PowerPoint ended up even more blurry than the one done in SnagIt. Converting the original to .wmf format produced the same results.  I'll continue experimenting with options.
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Joe Morgan

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Some insight into your workflow may lead to a suggestion.

What the resolution of your projects, 1920 x 1080, 1280 x 720,  or what?

Are you recording the presentation using Camtasia?

 PowerPoint can export a high quality 1920 x 1080 MP4 video of the presentation, that you could in turn edit in Camtasia. Adding narration and whatever floats your boat.

If your working with 1280 x 720 videos or slides. You're engaged in an uphill battle. 720p doesn't possess enough pixels to reduce an image to 25% of it's original size.
An image thats 4 times larger than 720p contains 14,745,600 pixels.
Reducing it down to 720p leaves you with only 92,160 pixels to work with.So you're removing 14,653,440 pixels of information.
At 1920 x 1080, you have 2,072,600 to work with.Slightly over double the resolution.That's  a substantial jump.
1080p made 720p TV's and monitors obsolete the moment they came on the market.
4K not so much, the file sizes make 4K untenable in most situations.

I think your problem can be overcome by changing your workflow.