Add background to PDF in Node.js

The following code snippets shows how to add a background image to PDF pages using the AsposePdfAddBackgroundImage function in Node.js.

Please check the following code snippet in order to add a background image in Node.js environment.

CommonJS:

1. Call require and import asposepdfnodejs module as AsposePdf variable.
2. Specify the name of the PDF file in which the background image will be added.
3. Call AsposePdf as Promise and perform the operation for adding background image. Receive the object if successful.
4. Call the function AsposePdfAddBackgroundImage.
5. Add background image to a PDF file. Thus, if ‘json.errorCode’ is 0, the result of the operation is saved in “ResultAddBackgroundImage.pdf”. If the json.errorCode parameter is not 0 and, accordingly, an error appears in your file, the error information will be contained in ‘json.errorText’.

  const AsposePdf = require('asposepdfnodejs');
  const pdf_file = 'Aspose.pdf';
  const background_file = 'Aspose.jpg';
  AsposePdf().then(AsposePdfModule => {
      /*Add background image to a PDF-file and save the "ResultBackgroundImage.pdf"*/
      const json = AsposePdfModule.AsposePdfAddBackgroundImage(pdf_file, background_file, "ResultAddBackgroundImage.pdf");
      console.log("AsposePdfAddBackgroundImage => %O", json.errorCode == 0 ? json.fileNameResult : json.errorText);
  });

ECMAScript/ES6:

1. Import the asposepdfnodejs module.
2. Specify the name of the PDF file in which the background image will be added.
3. Initialize the AsposePdf module. Receive the object if successful.
4. Call the function AsposePdfAddBackgroundImage.
5. Add background image to a PDF file. Thus, if ‘json.errorCode’ is 0, the result of the operation is saved in “ResultAddBackgroundImage.pdf”. If the json.errorCode parameter is not 0 and, accordingly, an error appears in your file, the error information will be contained in ‘json.errorText’.

  import AsposePdf from 'asposepdfnodejs';
  const AsposePdfModule = await AsposePdf();
  const pdf_file = 'Aspose.pdf';
  const background_file = 'Aspose.jpg';
  /*Add background image to a PDF-file and save the "ResultBackgroundImage.pdf"*/
  const json = AsposePdfModule.AsposePdfAddBackgroundImage(pdf_file, background_file, "ResultAddBackgroundImage.pdf");
  console.log("AsposePdfAddBackgroundImage => %O", json.errorCode == 0 ? json.fileNameResult : json.errorText);