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A .pptx file is a Microsoft PowerPoint presentation. It contains a set of slides meant to be shown as a slideshow. Teachers, students, and businesspeople all commonly create and use PPTX presentations. You can open and edit PPTX files with Microsoft PowerPoint, Apple Keynote, Google Slides, and LibreOffice Impress.

If you want to view a PPTX file's contents outside a presentation program, you can convert it to the PDF (.pdf), PNG (.png), or JPEG (.jpg) format. Just keep in mind that doing so will remove your ability to edit the presentation's content. Typically, PPTX files converted to the PDF format are saved as a single, multi-page document. PPTX files converted to the PNG or JPEG format are saved as multiple images, one for each of the presentation's slides.

NOTE: PowerPoint presentations created by pre-2007 versions of Microsoft PowerPoint were saved as PPT (.ppt) files, which are formatted differently than PPTX files.

About File Helper

File Helper is a free web-based file utility that can open Microsoft PowerPoint Presentation files and over 150 other file formats directly in your web browser. It displays file properties, including metadata, and image EXIF data, along with information about the corresponding file type. File Helper can also view and convert images to several common formats. Have an unknown file or a file without an extension? No problem — File Helper can identify over 15,000 file types.

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