Digitally Sign PPTX File Online via e-Signature App or using C++

Develop powerful C++ based PPTX document signing applications. Freely add digital signature into various documents including PPTX files online via app with instant download.

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Add Digital Signature into PPTX Files Online using App

  1. Upload PPTX files to sign digitally
  2. Add text for signature or upload signature image
  3. Click the “Sign” button
  4. Download the signed PPTX file

Digitally Sign PPTX File via C++

  1. Load PPTX presentation
  2. Load PFX file using DigitalSignature
  3. Comment new digital signature using set_Comments
  4. Add digital signature using get_DigitalSignatures()->Add
  5. Save signed PPTX file

C++ Code : Add Digital Signature in PPTX File


Develop eSignature Application using C++

Need to develop C++ script or utility application to easily sign multiple PPTX files electronically? With Aspose.Slides for C++ , child API of Aspose.Total for C++ , any C++ developer can integrate the above API code to program e-Signing app for signatures across documents. Powerful C++ library for document signing, supports many popular formats including PPTX format.

PPTX e-Signature library for C++

There are options to install Aspose.Slides for C++ or Aspose.Total for C++ onto your system. Please choose one that resembles your needs and follow the step-by-step instructions:

System Requirements

You can use this C++ library to develop software on Microsoft Windows, Linux and macOS operating systems:

  • GCC >= 6.3.0 and Clang >= 3.9.1 are required for Linux
  • Xcode >= 12.5.1, Clang and libc++ are required for macOS

If you develop software for Linux or macOS, please check information on additional library dependencies (fontconfig and mesa-glu open-source packages) in Product Documentation .


  • Can I use above C++ code in my application?
    Yes, you are welcome to download this code. One can easily develop a professional solution to add digital signature in PPTX file using C++. Use Aspose PPTX e-Sign API to develop high-level, platform independent software in C++.
  • Is this document digital signing App work only on Windows?
    You have the flexibility to initiate document signing from any device, irrespective of the operating system it runs on, whether it be Windows, Linux, Mac OS, or Android. All that's required is a contemporary web browser and an active internet connection.
  • Is it safe to use the online app to sign multiple PPTX documents?
    Of course! The output files generated through our service will be securely and automatically removed from our servers within a 24-hour timeframe. As a result, the download links associated with these files will cease to be functional after this period.
  • What browser should to use App?
    You can use any modern web browser like Google Chrome, Firefox, Opera, or Safari for online PPTX document compression.
  • How can I sign multiple PPTX files?
    Start by uploading one or more files you want to sign. You can either drag and drop your PPTX files or simply click inside the white area. Afterward, click the 'Sign' button, and our online esigning app will quickly process the uploaded files.
  • How long does it take to sign the PPTX files?
    This e-signature application operates quickly, It may take a few seconds to upload the files and sign them.

Explore File eSignature Options with C++

Sign DOC (Microsoft Word Binary Format)
Sign DOCX (Office 2007+ Word Document)
Sign ODP (OpenDocument Presentation Format)
Sign ODT (OpenDocument Text File Format)
Sign PDF (Portable Document Format)
Sign PPT (PowerPoint Presentation)
Sign PPTX (Open XML presentation Format)

What is PPTX File Format?

The PPTX file format is the successor to the PPT (PowerPoint Presentation) format and is used by Microsoft PowerPoint, the popular presentation software included in the Microsoft Office suite. PPTX files were introduced with the release of Microsoft Office 2007 and are based on the Open XML file format.

PPTX files store presentations as a collection of individual slides, each containing various elements such as text, images, shapes, charts, tables, and multimedia content. The format uses XML-based encoding, which allows for more efficient storage, improved data recovery, and enhanced compatibility with other software applications.

One of the key advantages of the PPTX format is its smaller file size compared to the older PPT format. This is achieved through improved compression techniques and the elimination of redundant data, resulting in more compact files that are easier to share, transfer, and store.

PPTX files also offer advanced features and capabilities, including support for enhanced formatting options, slide transitions, animations, and embedded multimedia elements. The format allows for greater flexibility in designing and customizing presentations, enabling users to create visually appealing and interactive slideshows.

PPTX files can be opened, edited, and presented using Microsoft PowerPoint or compatible software applications across different platforms, including Windows, macOS, and mobile devices. They can be shared via email, uploaded to cloud storage services, or accessed through collaboration platforms for seamless teamwork and presentation delivery.