CoreUpload v5 . ASP.NET Core 8+
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Download

Get the current CoreUpload 5.3.9 download package for ASP.NET Core, including the Companion broker module, 6 cloud sources, headless framework hooks, the content-aware image editor with AVIF/WebP output, demos, documentation, offline reference, and the packaged runtime files.

Available Downloads
Product Version Platform Action
CoreUpload for ASP.NET Core
NuGet package with Tag Helpers, middleware, and JS assets
 v5.3.9 .NET 8+ Download Package
AjaxUploader 5.3 for ASP.NET Web Forms
Dedicated Web Forms upload product for .NET Framework 4.x sites
 v5.3 .NET Framework 4.x Visit Site

CoreUpload-5.3.9 Download Package

Download a complete, ready-to-run ASP.NET Core package with 101 working demos, a runnable Blazor sample using the native <CoreUploader /> component, offline documentation, the class reference, the rebuilt NuGet package, and loose obfuscated runtime files. Just unzip, run dotnet run, and explore.

Download CoreUpload-5.3.9-download-package v5.3.9 . .NET 8 . ZIP /downloads/CoreUpload-5.3.9-download-package.zip
101 working demos
Offline docs and reference
Ready to run

Install via NuGet

Add CoreUpload directly to your existing project through the .NET CLI:

dotnet add package CoreUpload

Or search for CoreUpload in the NuGet Package Manager inside Visual Studio.

After installing

  1. 1 Add @addTagHelper *, CoreUpload to your _ViewImports.cshtml.
  2. 2 Drop the <core-upload> Tag Helper onto any Razor page.
  3. 3 Call app.MapCoreUploadEndpoints() in Program.cs to register upload API endpoints.

Need the full API surface? Browse the generated CoreUpload 5.3 class reference.

What's in the Download Package?

101 Working Demos

The same demo catalog shown on the live site, including validation, chunking, queue control, image handling, security, clipboard paste, and integration scenarios.

Latest CoreUpload Package

A locally packed CoreUpload.5.3.9.nupkg built from the current source tree, so the downloaded demo app restores against the same bits the live site is using.

Ready-to-Run Project

Complete ASP.NET Core 8 demo app with Program.cs, security demo endpoints, SSE progress streaming, and upload middleware already configured.

Copyable Source

Every demo page includes the markup and JavaScript used on the live site, so you can copy working patterns directly into your own project.

Trial FAQ

Yes. The trial includes every feature of the licensed product. The only difference is a small trial watermark displayed in the upload UI. This watermark is removed once you apply a valid license key.
No. The trial does not expire. You can evaluate CoreUpload for as long as you need before purchasing a license.

After purchasing, you will receive a license file (coreupload.lic) by email. Place it in your application's root directory, bin/, licenses/, or App_Data/ folder. The trial watermark will be removed automatically on the next request.

Local development on localhost, 127.0.0.1, and ::1 does not require a license file.

You can also specify the path explicitly in your configuration:

builder.Services.AddCoreUpload(options => {
 options.LicenseFile = "licenses/coreupload.lic";
});