AspNetCore.ReCaptcha 1.0.0

There is a newer version of this package available.
See the version list below for details.
dotnet add package AspNetCore.ReCaptcha --version 1.0.0
NuGet\Install-Package AspNetCore.ReCaptcha -Version 1.0.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="AspNetCore.ReCaptcha" Version="1.0.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add AspNetCore.ReCaptcha --version 1.0.0
#r "nuget: AspNetCore.ReCaptcha, 1.0.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install AspNetCore.ReCaptcha as a Cake Addin
#addin nuget:?package=AspNetCore.ReCaptcha&version=1.0.0

// Install AspNetCore.ReCaptcha as a Cake Tool
#tool nuget:?package=AspNetCore.ReCaptcha&version=1.0.0


ReCAPTCHA Library for .NET Core 2.x/3.x/5.x.


This package requires a secret key as well as a site key provided by ReCaptcha. You can aquire your keyset at It's possible to use either v2 or v3 ReCaptcha.


You can install this package using NuGet. You can use the following command:

# Package Manager
PM> Install-Package AspNetCore.ReCaptcha

dotnet add package AspNetCore.ReCaptcha


Place the aquired secret key and site key in the appsettings.json of your project. An example of the appsettings file is below:

    "ReCaptcha": {
	    "SiteKey": "your site key here",
	    "SecretKey": "your secret key here",
	    "Version": "v2"


To use AspNetCore.ReCaptcha in your project, you must add the following code to your startup.cs:

public void ConfigureServices(IServiceCollection services) {

In your .cshtml file you add the following using statement:

@using AspNetCore.ReCaptcha

And then you can add the ReCaptcha element to your DOM using the following code:


The action that you will be posting to (in this case SubmitForm) will need the following attribute on the method:

public IActionResult SubmitForm(ContactViewModel model)
    if (!ModelState.IsValid)
        return View("Index");

    TempData["Message"] = "Your form has been sent!";
    return RedirectToAction("Index");


For every version of .NET Core there is a configured example included in this repository. Check the Samples map for those examples.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.1 is compatible.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 is compatible. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
1.8.1 41,006 1/10/2024
1.8.0 3,153 12/28/2023
1.7.0 96,678 2/2/2023
1.6.0 76,158 9/28/2022
1.5.4 21,877 8/4/2022
1.5.3 37,959 3/16/2022
1.5.2 10,720 2/11/2022
1.5.1 1,504 2/3/2022
1.4.0 6,929 1/9/2022
1.3.0 2,786 12/11/2021
1.2.5 25,872 9/30/2021
1.2.3 16,617 7/20/2021
1.2.2 8,721 6/5/2021
1.2.1 13,555 3/15/2021
1.2.0 3,740 3/1/2021
1.1.0 2,044 4/24/2020
1.0.0 544 4/17/2020