We’re excited to announce the release of GroupDocs.Viewer for .NET UI 8.1.1 – the latest update to our open-source ASP.NET Core document viewer built for GroupDocs.Viewer for .NET.

This release introduces performance improvements with Angular 19, enhanced documentation via NuGet READMEs, and key bug fixes that make the viewer more stable and reliable. The update is now available on NuGet and GitHub.

🚀 What’s new in 8.1.1

1️⃣ Updated Angular UI

The Client App has been upgraded from Angular 16 to Angular 19, resulting in faster loading and rendering. This ensures a consistent experience across the UI and the Free Online Viewer.

2️⃣ Disabled Hot Reload in Samples

Sample applications often use local folders for caching. Previously, hot reload could mistakenly detect cache updates and refresh the app unexpectedly. To fix this, hot reload has been disabled in the launch settings of sample projects.

3️⃣ NuGet Package READMEs

Each NuGet package now includes a README file that appears directly on its NuGet.org page, making it easier to understand usage without leaving the site.

Examples:

4️⃣ Updated GroupDocs.Viewer

This release bundles GroupDocs.Viewer for .NET 25.8.
Read more: GroupDocs.Viewer for .NET 25.8 – August 2025 Highlights.

5️⃣ Fixed custom.css Reference

The issue with custom.css not being handled properly when no custom styles were defined has been resolved.

6️⃣ Enhanced Config Class

The Config.cs class has been extended with more details and options for fine-tuning UI behavior.

7️⃣ Correct Page Number Display

Resolved an issue reported in the Support Forum where the wrong page number could appear if the server response was delayed.

📦 How to get the update

  • NuGet – Upgrade GroupDocs.Viewer.UI* packages to version 8.1.1.
  • GitHub – Build from source in the GitHub repository.

📚 Learn more