Google Drive (also known as Google Docs) now let you quickly preview more than 30 file types including PowerPoint presentations (.ppt presentations). This is great to quickly flip between files until you find the one you want. To see a preview of a Google document or .ppt presentation, right-click on the file name and select “preview”. Once the preview window is open, you can click on the arrows on either side to flip to other files. And right from within the preview, you can watch video files or scroll through multi-page documents.
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