Isaac Maw
Technical Content Creator
Published March 25, 2026
Updated March 30, 2026
5 min
How to Create a Node.js PDF Editor with Apryse WebViewer
Isaac Maw
Technical Content Creator
Summary: Understand how to implement PDF Editor functionality in your Node.js application with this blog, including sample code and documentation for Apryse WebViewer, our JavaScript document SDK that supports Node.js and other frameworks.
When you need to add PDF editing capability to your Node.js application, WebViewer offers the functionality you need to read, write, modify and edit PDF documents. In this article, we’ll take a look at how to get set up with the WebViewer SDK to add PDF editing in your Node.js application.
What is Node.js?
Node.js is a free, open-source JavaScript runtime environment that allows developers to execute JavaScript code outside a browser.
JavaScript is a core language for frontend web development, allowing developers to build dynamic and interactive elements in web applications. With Node.js, developers can also use JavaScript in the backend, allowing them to use one language across the entire stack, simplifying knowledge and team requirements, enabling reuse of certain code and logic, and shared libraries.
Node is fast, scalable and free, so it’s a popular choice for a variety of applications.
Try out WebViewer PDF Text Editing in the Apryse Showcase
PDF Editing with WebViewer SDK
Certain document processing functionality works best on the client-side, such as PDF viewing, while more complex functionality, such as programmatically editing a large number of PDF documents, runs best on the backend.
With WebViewer SDK and Node.js, you can utilize WebViewer functionality in your application, whether you prefer to execute the code in the browser with WebViewer with a framework such as React or Vite, or on the server using Node.js.
Getting Started
To get started with WebViewer for Node.js, you will need to:
- Download WebViewer
- Get Your Apryse 30-day Trial Key
- Have a background understanding of Node.js
You can watch this tutorial video to learn how to initialize and setup WebViewer for Node.js, then read on below for more details and code samples:
Sample Code: How to Edit PDFs with WebViewer
The following is Apryse sample code for using Apryse SDK to programmatically edit an existing PDF document's page display list and the graphics state attributes on existing elements.
In particular, this sample strips all images from the page and changes the text color to blue. You can also build a GUI with interactive PDF editor widgets. Some of Apryse SDK's other functions for programmatically editing PDFs include the Cos/SDF low-level API, page manipulation, and more. Visit the links to learn more about our Server SDK and PDF Editing & Manipulation Library.
More PDF Editing Functionality
Now that you’re set up with WebViewer and PDF Editing, you can change PDF document content without converting to other file types, enabling faster, more accurate document workflows without users leaving your application.
Check out our documentation to find details and walkthroughs on WebViewer features for:
- Coordinates | An introduction to coordinate systems such screen, page, or scrolling coordinates.
- Stamp content | To stamp text, image, or PDF page to a PDF document.
- Watermark | To overlay a stamped text on each page of a document as a watermark to documents.
- Remove images | To remove all images from a PDF document page.
- Reading page content | An introduction to reading page content.
- Write page content | An introduction to writing page content.
- Replace page content | To replace PDF text or image with a target region.
- Graphics state | An introduction to graphics state.
- Edit Text on PDF files | Edit text directly on PDF files (experimental feature).
Next Steps
If you’re ready to get started with WebViewer in production or have any questions about your trial, please contact sales.
FAQ
Q: What is the best way to edit PDFs using Node.js?
A: Apryse provides a fully featured API that lets you programmatically modify text, images, and structure while preserving formatting. With support for Node.js, WebViewer SDK ensures high‑fidelity, secure document processing suitable for production workflows.
Q: Can I edit PDFs in the browser without converting them to another format?
A: Yes, Apryse WebViewer enables true in‑PDF editing directly in the browser (or on the backend using Node.js), eliminating conversions and maintaining exact layout integrity for a seamless WYSIWYG experience. This gives users intuitive, real‑time editing with reflowing text, custom styling, and robust annotation support.
Q: What’s the difference between client‑side and server‑side PDF editing?
A: Client‑side editing in WebViewer offers instant, interactive modifications inside the user’s browser, while server‑side editing with Apryse’s backend tools supports scalable, automated updates across large document sets. Both approaches work together to deliver secure, flexible editing tailored to your application’s architecture.
