PPTX Merger

Combine PPTX online from any device with a modern browser like Chrome, Firefox.

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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.

GroupDocs PPTX Merger App is a free online application that allows you to merge multiple PowerPoint presentations into a single file. There is no need to install any third-party software like Microsoft PowerPoint, OpenOffice Impress or other tools and plugins. All you need is your favorite web-browser!

The simple yet powerful user interface offers several ways to combine presentations:

GroupDocs PPTX Merger App is based on GroupDocs.Merger API for joining presentations programmatically in any popular programming language and platform: C#, Java, Cloud etc. If you are thinking of creating your own presentation merging solution, take a look at the full list of GroupDocs.Merger features by visiting its documentation. Here you can always find more code examples and detailed explanations of possible file merging options and use cases.

GroupDocs.Merger API is a right choice for corporate solutions which needs file merge and document joining features.

For individual developers and tiny projects GroupDocs.Merger Cloud SDK is the optimal solution. It provides a lightweight version of presentations merging functionality, that is available via Node.js, PHP, Python, Ruby as well as .NET, Java, Android etc.

Other GroupDocs Apps you may want to try: DOCX Merger App for merging multiple DOCX or DOC files into one file; PDF Merger App for joining several PDF documents together.

Free Document Conversion, Viewer, Merger app for Windows

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 of file size.
  • Batch conversion of multiple files.
  • One app with rich features like Conversion, Viewer, Merger, Parser, Comparison, Signature.
  • Regular FREE updates with new features coming every month.
Free Download

How to merge PPTX files online

  • Select or drop your PPTX documents to upload for merge.
  • Once upload completes, drag PPTX document thumbnails to rearrange them (if needed).
  • Click on Merge Now button to start merge process.
  • Once your PPTX documents are merged click on Download Now button.
How to


  • ❓ How can I merge files using PPTX Document Merger?
    First of all, you need to select and add PPTX files for merging by two ways: drag and drop your PPTX files to the white area with the label ”Click or drop your file here” or click on this area and then select the desired PPTX files using file explorer. Once the files are added, the green progress bar will begin to grow. When the process is completed, you can click the Save button and then download your merged PPTX file.
  • ⏱️ How long does it take to merge PPTX files?
    Usually, this PPTX Document Merger works fast for small files in seconds.
  • 🛡️ Is it safe to merge files using our free PPTX Document Merger?
    Yes, the download link of merged PPTX file will be available only for you. The uploaded files will be ereased after 24 hours and the download link will stop working after this time period. No one has access to your files. The PPTX Document Merger is absolutely safe.
  • 💻 Can I merge PPTX files on Linux, Mac OS or Android?
    Yes, you can use our free PPTX Document Merger on any operating system that has a web browser. Our PPTX Document Merger works online and does not require any software installation.
  • 🌐 What browser should I use to merge PPTX files?
    You can use any modern browser to merge PPTX files, for example, Google Chrome, Microsoft Edge, Firefox, Opera, or Safari.

Other Merger file formats

You can also merge other file formats. Please see the list below.

Merge CSV Files (Comma Separated Values File)
DOC Merger (Microsoft Word Document)
Merge DOCM Files (Word Open XML Macro-Enabled Document)
DOCX Merger (Microsoft Word Open XML Document)
Merge EPUB Files (Open eBook File)
HTML Merger (Hypertext Markup Language File)
Merge MHT Files (MHTML Web Archive)
Merge ODP Files (OpenDocument Presentation)
ODS Merger (OpenDocument Spreadsheet)
Merge ODT Files (OpenDocument Text Document)
ONE Merger (OneNote Document)
Merge PDF Files (Portable Document Format File)
PPS Merger (PowerPoint Slide Show)
Merge PPSX Files (PowerPoint Open XML Slide Show)
PPT Merger (PowerPoint Presentation)
Merge RTF Files (Rich Text Format File)
TEX Merger (LaTeX Source Document)
Merge TSV Files (Tab Separated Values File)
TXT Merger (Plain Text File)
Merge VDX Files (Visio Drawing XML File)
VSDM Merger (Visio Macro-Enabled Drawing)
Merge VSDX Files (Visio Drawing)
VSSM Merger (Visio Macro-Enabled Stencil File)
Merge VSSX Files (Visio Stencil File)
VSX Merger (Visio Stencil XML File)
Merge XLAM Files (Microsoft Excel Add-in)
XLS Merger (Excel Spreadsheet)
Merge XLSB Files (Excel Binary Spreadsheet)
XLSM Merger (Excel Open XML Macro-Enabled Spreadsheet)
Merge XLSX Files (Microsoft Excel Open XML Spreadsheet)
XPS Merger (XML Paper Specification File)
Merge TIF Files (Tagged Image File)
TIFF Merger (Tagged Image Format File)
Viewer Annotation Conversion Comparison Signature Assembly Metadata Search Parser Watermark Editor Merger Redaction Classification Splitter Translation Unlock Protect Scanner