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PPTXPowerPoint 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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How to

  How to add watermark to PPTX

  • Open this GroupDocs.Watermark free online tool in your favourite browser.
  • Click inside the file drop area to upload a PPTX file or drag & drop a PPTX file.
  • Your PPTX file will be rendered for you to add text and image watermarks instantly.
  • Add text and image watermarks and setup their properties.
  • Download the updated PPTX file with watermarks added.

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 GroupDocs.Watermark for .NET API

Powerful document watermarking .NET library & API.
Integrate this library to your document processing solution and manage watermarks for many document formats!

More Platforms

 GroupDocs.Watermark for Java API

Java version of GroupDocs.Watermark library & API.
Manage watermarks in your documents in Java!

 GroupDocs.Watermark Cloud

Easy to use cross-platform Cloud solution.
Manage watermarks using Cloud API easily using cURL or existing programming SDKs!

Open-Source UI/UX Solutions

 GroupDocs.Total for .NET and Java

GroupDocs.Total is an open-source UI/UX solution where all GroupDocs products are working together as one.
GroupDocs.Total provides multiple high quality features against over 120 document formats, such as conversion, signature, parser and much more!

Other Watermark App supported file formats

You can also add watermark to many other file formats. Please see the complete list below.