Reduce PPTX file size
Compress PPTX presentations online and reduce file size in your browser.
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About PPTX compressor
This page is a PPTX compressor: it makes PowerPoint presentations smaller to store, upload and send. Reduce PPTX size to 500Kb, 200Kb or even 100Kb, then download the smaller file. The tool runs in a web browser, so there is nothing to install on your device.
Compressing helps when a presentation is too heavy to attach to an email, when a slide deck loads slowly from a shared drive, or when you want to keep a copy of a talk without using much storage. Large slide images often make PowerPoint files grow, so shrinking them is a common first step.
Upload your presentation, pick a compression level and click the Compress button. The tool removes data the file does not need, such as metadata and unused templates, and optimizes its images. When it finishes, the page shows the new size, and you download the result with the Download now button.
PPTX compressor features
- Pick one of three compression levels to balance file size and quality the way you want.
- Use the compressor on any device: Windows, macOS, Android or iOS, on a computer, phone or tablet.
- Run the compressor straight from your browser, with no software to download or set up.
- Keep your presentation private: the file you upload is visible only to the person who uploaded it.
- Use it free of charge, with no registration and no account to create.
How to compress PPTX presentations online
Questions & Answers
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Is it free to compress PPTX presentations?Yes. GroupDocs Compress is free to use, with no registration required.
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Can I compress a PPTX presentation on my phone?Yes. The compressor works on any platform, including Windows, macOS, Android and iOS, on computers, phones and tablets.
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Will compressing a presentation make its images look worse?It can, depending on the level you choose. Extreme gives the smallest file with lower quality, Medium is the default with good compression and good quality, and Low keeps high quality with less compression. The number and quality of images affect the compressed size the most.
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What happens to my presentation after I compress it?Your uploaded file is visible only to the person who uploaded it. The download link works for 24 hours, after which the files are removed from the servers.
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Which file formats can I compress?Supported formats are PDF, DOC, DOCX, XLS, XLSX, PPT, PPTX, JPG, JPEG, PNG, BMP, GIF, TIF, TIFF and WEBP.
PowerPoint Open XML Presentation
PowerPoint Open XML Presentation (PPTX) is the modern, XML-based format for Microsoft PowerPoint presentations. It supports slides, text, images, charts, animations, and embedded media. Benefits include smaller file sizes, improved data recovery, better compatibility with other software, and support for advanced formatting and collaboration features.
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