PPTX PowerPoint Open XML Presentation

Files with PPTX extension are presentation files created with popular Microsoft PowerPoint application. Unlike the previous version of presentation file format PPT which was binary, the PPTX format is based on the Microsoft PowerPoint open XML presentation file format. A presentation file is a collection of slides where each slide can comprise of text, images, formatting, animations, and other media.

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Free Document Conversion, Viewer, Merger app for Windows

Easily convert, view or merge unlimited files on your own Windows PC.
Process Word, Excel, PowerPoint, PDF and more than 100 file formats.
No limit on file size.
Batch conversion of multiple files.
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How to annotate PPTX documents online

Click inside the file drop area to upload a PPTX file or drag & drop a PPTX file.
File will be automatically rendered for you to view instantly.
Scroll down to navigate between pages.
Add annotations to the document.
Download the annotated version of your PPTX file.

FAQ

❓ How can I annotate PPTX document?

First, you need to upload a file: drag & drop your PPTX file or click inside the white area to choose a file. Then you will be redirected to the annotation application.
⏱️ How fast can I start adding annotations to PPTX document?

The annotation app works fast. Typically it takes a couple of seconds to open a PPTX document and prepare it for adding annotations.
🛡️ Is it safe to annotate PPTX files using free GroupDocs Annotation App?

Of course! The preview files will be available instantly after the file uploaded. We will delete the uploaded file after 24 hours.
💻 Can I annotate documents PPTX on Linux, Mac OS, or Android?

Yes, you can use the free GroupDocs Annotation on any operating system that has a web browser. Our PPTX Annotation App works online and does not require any software installation.
🌐 What browser should I use to annotate PPTX documents?

You can use any modern browser to annotate PPTX documents, for example, Google Chrome, Microsoft Edge, Firefox, Opera, or Safari.

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Annotate PPTX Online

Annotate, Comment and Tag your PPTX file for Efficient Collaboration Online for Free