Limitations

Free delivers the same performance and set of features as the Professional version but displays a watermark after the first two pages.

JavaScript

You can either install GemBox.PdfViewer from NPM, or you can include it using script tag.

NPM

First, install the package from NPM:

npm install @gembox/pdfviewer
# or
yarn add @gembox/pdfviewer

Then you can initialize the PDF viewer:

<!-- Define a container for the PDF viewer -->
<div id="viewer" style="width: 600px; height: 350px"></div>

<script type="module">
    import { GemBoxPdfViewer} from '@gembox/pdfviewer';
    import '@gembox/pdfviewer/dist/es/pdfviewer.css';

    // Set license key to use GemBox.PdfViewer in Free mode.
    GemBoxPdfViewer.setLicense("FREE-LIMITED-KEY");

    // Create PDF viewer in the specified container.
    GemBoxPdfViewer.create({ container: "#viewer" });
</script>

Script tag

You can use jsdelivr CDN to include GemBox.PdfViewer in your project:

<link href="https://cdn.jsdelivr.net/npm/@gembox/pdfviewer/dist/iife/pdfviewer.css" rel="stylesheet" type="text/css"/>
<script src="https://cdn.jsdelivr.net/npm/@gembox/pdfviewer/dist/iife/pdfviewer.js"></script>

After that, you can initialize the PDF viewer:

<div id="viewer" style="width: 600px; height: 350px"></div>

<script>
    GemBoxPdfViewer.setLicense("FREE-LIMITED-KEY");
    GemBoxPdfViewer.create({ container: "#viewer" });
</script>

ASP.NET Core

To use GemBox.PdfViewer from ASP.NET Core applications, add the NuGet package to your project.

dotnet add package GemBox.PdfViewer

After that, you can use tag helper to initialize the PDF viewer:

<gembox-pdfviewer 
    style="width:600px;height:350px;" 
    license-key="FREE-LIMITED-KEY">
</gembox-pdfviewer>

AI coding

CLI coding agents such as GitHub Copilot, Claude Code, and OpenAI Codex can write valid GemBox code when enabled with our gembox-skill.

Usage

You can use GemBox.PdfViewer Free for any purpose, including use in commercial applications.

GemBox is under no obligation to provide technical or any other support to the users of the free version.

GemBox.PdfViewer Free Version