Create PDF Forms in Node.js

PDF Generator for SurveyJS allows you to generate interactive PDF forms on a Node.js server. This tutorial describes how to configure PDF form creation in a Node.js application.

• Install the survey-pdf npm package
• Configure Export Properties
• Populate the PDF Form with Data
• Export the PDF Form

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PDF Generator for SurveyJS is built upon the jsPDF library and is distributed as a survey-pdf npm package. Run the following command to install the package and its dependencies, including jsPDF:

npm install survey-pdf --save

If your survey contains HTML or Signature Pad questions, install the jsdom package to create a simulated web environment in a Node.js application. Create a JSDOM instance and reference the window and document objects from the JSDOM instance in a global scope:

const jsdom = require("jsdom");
const { JSDOM } = jsdom;
const SurveyPDF = require("survey-pdf");

const { window } = new JSDOM(`...`);
global.window = window;
global.document = window.document;

Export properties allow you to customize the page format, orientation, margins, font, and other parameters. Refer to the IDocOptions interface for a full list of properties. The following code changes the fontSize property:

const pdfDocOptions = {
  fontSize: 12
};

Pass the object with export properties as a second parameter to the SurveyPDF constructor. The first parameter should be a survey JSON schema:

// ...
const surveyJson = { ... };

const surveyPdf = new SurveyPDF.SurveyPDF(surveyJson, pdfDocOptions);

Specify the data property of a SurveyPDF instance to define question answers. If a survey contains default values, and you wish to preserve them, call the mergeData(newObj) method instead.

surveyPdf.data = {
  // ...
  // An object with question answers
  // ...
};
// ----- or -----
surveyPdf.mergeData({
  // ...
  // An object with question answers
  // ...
});

For more information on how to programmatically define question answers, refer to the following help topic: Populate Form Fields.

To save a PDF document with the exported survey, call the save(fileName) method on the SurveyPDF instance. If you omit the fileName parameter, the document uses the default name ("survey_result.pdf").

surveyPdf.save("My PDF Form.pdf");

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