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Add Page Numbers in PDF using Node.js REST API

This article describes how to add page numbers in PDF using Node.js REST API. You will learn to automatically insert a page number in PDF with the low‑code Node.js API and the Aspose.PDF Cloud SDK for Node.js, and see how to customize the page‑number stamp through the library’s exposed properties. For more information about the PDF format, see the PDF file info page.

Prerequisite

Steps to Add Page No to PDF using Node.js REST Interface

  1. Initialize the PdfApi client with your ClientId and ClientSecret.
  2. Define the inputPdf and outputPdf file names that will be used in the application.
  3. Read the local PDF file and upload it to Aspose Cloud storage.
  4. Create a PageNumberStamp object and configure its margins, alignment, and starting number.
  5. Call the PostDocumentPageNumberStamps() method to apply the numbering to all pages.
  6. Download the updated PDF that now contains page numbers and save it locally.

These steps summarize how to insert page numbers in a PDF using the Node.js RESTful service. Upload the source PDF to cloud storage, create a PageNumberStamp object with the desired parameters, invoke PostDocumentPageNumberStamps(), and finally download the modified PDF.

Code to Insert Page Number in PDF using Node.js‑based API

The sample demonstrates adding page numbers to a PDF with the Node.js low‑code API. You can also adjust other stamp properties such as opacity, rotation (0, 90, 180, 270 degrees), and indentation.

For related tasks, see the article on converting a GIF to PDF using the Node.js REST API: Convert GIF to PDF using Node.js REST API.

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