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Image degradation when making images smaller and using Save as Picture

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    Image degradation when making images smaller and using Save as Picture

    Hi

    I've created an image to use as a logo in PowerPoint. I used Save as Picture and then inserted it back into the PowerPoint as an image, same size.

    I then went through the process of making that specific image smaller, then a bit smaller, then a bit smaller still, fiddling about getting the image the right size to be used as a YouTube channel logo.

    I tried one image than the next, attempting to find the one that wasn't too big and was cut off, versus the one that was really small and didn't meet the minimum size requirements. When I was trying the largest one that I thought would suffice the image resolution was great, but the smaller ones I tried to update to the YouTube channel logo - the worse the image resolution became.

    I changed the PowerPoint setting to prevent compression of images - made no difference.

    Am I using an inappropriate process or is the process itself causing the issues? Are there other settings I don't know about that I should be editing that might help?

    Many thanks indeed.

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    Re: Image degradation when making images smaller and using Save as Picture

    PowerPoint is not a great tool for graphic design. If you are sizing a pasted image, you are going to lose resolution. Typically a graphics designer will use vector graphics to design logos so the resolution is preserved in size changes. When you paste an image into PowerPoint you are dealing with a raster image--you cannot shrink it without losing resolution, and you cannot increase the size without getting pixilation.

    I think PowerPoint uses vector graphics so you may get better results by making a copy of the original graphic within PowerPoint, then sizing the copy, then saving it. That way you are doing the sizing as early in the process as possible. I am just guessing without knowing how you created your image. If it is not proprietary maybe you can share the PowerPoint file here for more help.

    By the way, resolution is unrelated to compression. Compression is the process by which image information is recoded to result in a smaller file size. This is similar to zipping a text file. There are two types of compression: Lossless and lossy. Lossless compression stores the image in a smaller size without losing any information; PNG is lossless. Lossy compression removes some information but image degradation is minimal; JPEG is lossy. You can have a high-res image that is stored with lossy compression, and low-res image that is stored with lossless compression.
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    Re: Image degradation when making images smaller and using Save as Picture

    Thank you very much.

    In the which case it's manipulate the original image created in PowerPoint (it's just text boxes and shapes with different fills etc) to get my smaller images and then do the Save as Picture step.

    I'll give that a go and see how I get on - thank you.

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    Re: Image degradation when making images smaller and using Save as Picture

    Yes I would try that but if it has text, you are probably going to have to resize the text size separately as it will stay the same if you scale down the graphic elements. That is, if your image contains Arial 10-point text and you shrink your image to 50%, it will still be 10-point text and you will have to size it down to 5 points.

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    Re: Image degradation when making images smaller and using Save as Picture

    Yes indeed! That's why I was trying to avoid doing it that way as there's about 25 separate objects of various kinds so it's a bit of a fiddle. Just need to find a moment to do that though as I might not have chance for a few days yet to get back to this task.

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