Node.js REST API to Generate & Manipulate Visio Diagrams

Getting Started with Aspose.Diagram Cloud SDK for Node.js

The recommend way to install Aspose.Diagram Cloud SDK for Node.js is using NPM. Please use the following command for a smooth installation.

npm install aspose.diagram

Create Visio Diagrams in Node.js Programmatically

Aspose.Diagram Cloud SDK for Node.js has provided complete support for creating Visio diagrams from scratch inside Node.js applications. This capability is useful for applications that need to dynamically generate diagrams based on user input, data processing, or automation scripts. For example, imagine an application that creates organizational charts based on user data input. The SDK allows developers to programmatically add shapes, connectors, and define their properties such as position, size, and rotation. Here is an example that shows, how software developers can create a nee diagram inside Node.js applications.

var aspose = aspose || {};

aspose.diagram = require("aspose.diagram"); 

var diagram = new aspose.diagram.Diagram();

diagram.save("output.vsdx", aspose.diagram.SaveFileFormat.VSDX);

Visio Diagram Conversion in Node.js

In many scenarios, diagrams need to be shared in different formats. The Aspose.Diagram Cloud SDK for Node.js supports conversion of Visio files to various other supported file formats such as PDF, SVG, PNG, GIF, JPEG and many more. This feature allows developers to build applications where users can upload a diagram and download it in a preferred format. The following example shows how easily software developers can convert an existing Visio diagram into PNG file formats inside Node.js.

const diagram = new Diagram('myDiagram.vsdx');
diagram.exportTo('myDiagram.png', 'png');

Visio Diagram Data Extracting in Node.js

In some cases, software developers may need to analyze diagram structures and extract detailed information from a diagram. Aspose.Diagram Cloud SDK for Node.js provides APIs to programmatically retrieve shape data, page information, layer details, and other elements from existing Visio diagrams inside Node.js application. This is useful for creating reports or integrating diagrams with other business systems. For example, an application could extract shapes and connectors from a workflow diagram to generate a textual summary of the process. The following example demonstrates how software developers can Extract Shape Data inside Node.js applications.

const getShapeInfo = async () => {
    try {
        const shapeInfo = await diagramApi.getShape("diagram.vsdx", "Page-1", 1);
        console.log("Shape info:", shapeInfo);
    } catch (error) {
        console.error("Error retrieving shape info:", error);
    }
};
getShapeInfo();

Manipulate Visio Diagrams in Node.js Apps?

Aspose.Diagram Cloud SDK for Node.js allows software developers to load and manipulate existing diagrams with ease inside Node.js environment. You can add, remove, or edit shapes and their properties. Additionally, users can manipulate diagram pages, layers, connectors, and formatting properties directly through the SDK. Here is a simple example that shows how programmers can add a shape to a diagram inside Node.js applications.

const addShape = async () => {
    try {
        const shapeData = {
            shapeId: 1,
            pageName: "Page-1",
            x: 2,
            y: 2,
            width: 2,
            height: 2
        };
        const response = await diagramApi.addShape("sample.vsdx", shapeData);
        console.log(response);
    } catch (error) {
        console.error("Error adding shape:", error);
    }
};
addShape();