Go to the following place C:Program Files (x86)Foxit SoftwareFoxit ReaderShell Extensions or C:Program Files (x86)Foxit SoftwareFoxit PhantomPDFShell Extensions to check if the required DLL and EXE shown below are installed.Please exit Foxit program and any running File Explorer windows, do the following.To find your preview thumbnail image file you open the docProps folder and there she is, your thumbnail.jpeg image: Double click this file and you can see it in your associated image editing app: Going even deeper Because I like to hack PowerPoint both at work and in my spare time (please send help) I was curious to know if it was possible to programmatically set the Save preview picture option via VBA ( Visual Basic for Applications ) which is a programming language that comes with all Office apps.
Help In File Explorer Thumbnails How To Generate ThemYoure about to learn everything you ever needed to know about how these work, how to generate them, and how to get rid of them.
![]() ![]() When you view these three formats in Windows File Explorer, the icon you see reflects that format or file extension: These icons correspond to the three standard formats: presentation, template and slide show. If you add macros to any of these files the formats change to ones ending in m and the icons change, illustrating the presence of macros with an exclamation mark (Office 365 PowerPoint 2016 and 2019): How to create custom PowerPoint preview thumbnail icons You might be happy to create and distribute your beloved PowerPoint content using these default icons but when you have a lot of them all in the same place, its nice to see a preview of whats inside the separate files. Providing a visual cue of the files content can also help improve accessibility for your users. Heres an example of three presentations with the preview thumbnail set in each PowerPoint file: This makes it easy to see what each file contains So how do you activate these thumbnails Preview thumbnails are created by PowerPoint taking a static capture of your first non-hidden slide. If that slide contains animations, youll need to take this into account because the thumbnail will be generated from what you see in the normal view, not the slide show view. Heres how you create a thumbnail preview image for your PowerPoint file: 1. Click File followed by Info to open what Microsoft call the backstage 3. Over on the right-hand side, click the Properties heading then click Advanced Properties in the drop-down menu 4. At the bottom of the window, tick the Save preview picture check box: 6. Back in Windows File Explorer, or your desktop if thats where your presentation is, press F5 to refresh the view and your preview thumbnail will magically appear. If you dont see it, you may need to clear your Windows thumbnail cache. Heres how to do that: Click the Windows Start button and type cleanmgr followed by Enter (or click Disk clean-up when it appears) Make sure the Thumbnails check box is ticked at the bottom of the list and then click OK followed by Delete Files Go back to Explorer (or your desktop) and press F5 Refreshing the preview image Each time you change the content in your first non-hidden slide and resave your presentation, PowerPoint will automatically update the thumbnail image. To see any changes, make sure you press F5 back in Explorer or your desktop. How to turn off the preview thumbnail Should you decide that you dont want the preview thumbnail to appear in Explorer, turning it off is as easy as turning it on. Tech Corner For those of you who want to know whats going on under the hood of PowerPoint, Im going to let you in on where the thumbnail file gets created in the Office XML archive. If you dont know what this is, its probably time to grab a cup of your favourite hot drink while we write an article on that Or you could read this file size reduction article which touches on zip archives. When the thumbnail image is created by PowerPoint, its saved inside the zip archive that makes up the presentation file. There are several ways to see inside the raw guts that make up a PowerPoint file. Help In File Explorer Thumbnails Zip Application ToYou can use the fairly well known method of renaming the file to have a.zip extension or use my preferred method which is to use the free and very powerful 7-Zip application to open the archive without renaming it or having to extract files. Once youve downloaded and installed 7-Zip you can simply right-click on your file and select 7-Zip Open archive as shown below: Now you have opened the door to a new and wonderful underworld known as Office Open XML where we can browse and view what makes your PowerPoint presentation tick: You can navigate the content of your PowerPoint file just as you would with Explorer.
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