Aspose.Diagram  for Python

Change background of VSSM File for Python

Change background of Microsoft Visio VSSM files in browser without requiring Visio application or Office Automation.

How to Change background of VSSM File Using Python

In order to change background of VSSM file, we’ll use

Aspose.Diagram for Python

API which is a feature-rich, powerful and easy to use conversion API for Python platform. You can download its latest version directly from


Steps to Change background of VSSM via Python

Aspose.Diagram makes it easy for the developers to change background of VSSM file with just few lines of code.

  1. Load VSSM file with an instance of Diagram class
  2. Add a new page to diagram as background page
  3. Insert an image to the background page
  4. Set background page to the first page of diagram
  5. Call the Diagram.Save method

System Requirements

Aspose.Diagram for Python is supported on all major operating systems. Just make sure that you have the following prerequisites.

Aspose.Diagram for Python is platform-independent API and can be used on any platform (Windows, Linux and MacOS), just make sure that system have Java 1.8 or higher, Python 3.5 or higher.


Python code to change background of VSSM

        diagram = new Diagram(dataDir+"Drawing1.vssm");
        SrcPage = diagram.getPages().get(0)
        backgroundPage = Page();
        backgroundPage.setName("Back page");  
        id  = newDiagram.getPages().add(backgroundPage);
        backgroundPage.setID ( id);
        backgroundPage.setBackground( BOOL.TRUE);
        backgroundPage.addShape(1, 1, 1, 1,"image.png"));
  • About Aspose.Diagram for .NET API

    Aspose.Diagram is a Microsoft Visio document format manipulation API. One can easily load, create, modify, manipulate including daigram elements and convert Visio diagrams to other formats such as PDF, XPS, JPEG, PNG, BMP, TIFF, SVG, EMF and more. It is a standalone API and does not require Microsoft Visio or any other software to be installed.

    VSSM What is VSSM File Format?

    Files with .VSSM extension are Microsoft Visio Stencil files that support provide support for macros. A VSSM file when opened allows to run the macros to achieve desired formatting and placement of shapes in a diagram. In general, Microsoft Visio is drawing software that allows to create files that can contain and represent user defined information in different shapes. The most common of these include, but not limited to, UML diagrams, flow charts, visual objects, information flow, organizational charts, software diagrams, network layout, database models, objects mapping and other similar information. Files generated using Visio can also be converted to different file formats such as PNG, BMP, PDF and others.

    Read More

    Other Supported Change Background of Formats

    Using Python, One can also change background of many other file formats including.

    VDX (Microsoft Visio Drawing Format)
    VSD (Microsoft Visio Drawings)
    VSDM (Microsoft Visio Drawing Format)
    VSDX (Microsoft Visio Format)
    VSS (Stencil Files)
    VSSX (Drawing Stencils)
    VST (Vector Image Files)
    VSTM (Microsoft Visio Template Files)
    VSTX (Microsoft Visio Drawing Template)
    VSX (Stencils)
    VTX (Microsoft Visio Drawing Template)