IronPDF License Keys

Get Your License Key

IronPDF license keys allow you to deploy your project live without any watermark.

Licenses start at just $499 and include one free year of support and updates.

You can also try IronPDF free for 30 days with a trial license key.

Step 1: Download the Latest Version of IronPDF

Install via NuGet

In Visual Studio, right click on your project solution explorer and select "Manage Nuget Packages...". From there simply search for IronPDF and install the latest version... click ok to any dialog boxes that come up.

This will work in any C# .NET Framework project from Framework 4 and above, or .NET Core 2 and above. It will also work just as well in VB.NET projects.

PM > Install-Package IronPdf

https://www.nuget.org/packages/IronPdf

Install via DLL

Alternatively, the IronPDF DLL can be downloaded and manually installed to the project or GAC from https://ironpdf.com/packages/IronPdf.zip

Remember to add this statement to the top of any cs class file using IronPDF:

  using IronPdf;

Step 2: Apply Your License Key

Set your IronPdf license key using code

Add this code to the startup of your application, before IronPDF is used. This method is universally effective and straightforward.

It works for .NET Core and also for .NET Framework applications.

IronPdf.License.LicenseKey = "IRONPDF-MYLICENSE-KEY-1EF01";

IronPdf.License.LicenseKey = "IRONPDF-MYLICENSE-KEY-1EF01";

IronPdf.License.LicenseKey = "IRONPDF-MYLICENSE-KEY-1EF01"

VB C#

You can validate that your software is licensed using either IronPdf.License.IsValidLicense(string LicenseKey) or the IronPdf.License.IsLicensed property.

Set your key using Web.Config or App.Config in .NET Framework Applications

To apply a key globally to your application using Web.Config or App.Config, add the following key to your config file in appSettings.

<configuration>
....
<appSettings>
<add key="IronPdf.LicenseKey" value="IRONPDF-MYLICENSE-KEY-1EF01"/>
</appSettings>
....
</configuration>

Ensure that IronPdf.License.IsLicensed returns true to verify.

Set your key using a .NET Core appsettings.json file

To apply a key globally to your application with .NET Core:

Add a JSON file to your project called appsettings.json in the root directory of your project
Add a 'IronPdf.LicenseKey' key to your JSON config file. The value should be your license key.
Ensure that the file properties include Copy to Output Directory: Copy always
Ensure that IronPdf.License.IsLicensed returns true to verify.

File: appsettings.json

{

    "IronPdf.LicenseKey":"IRONPDF-MYLICENSE-KEY-1EF01"

}

Step 3: Test if your key has been installed correctly

// Check if a given license key string is valid.
bool result = IronPdf.License.IsValidLicense("IRONPDF-MYLICENSE-KEY-1EF01");

// Check if IronPdf is licensed successfully 
bool is_licensed = IronPdf.License.IsLicensed;

// Check if a given license key string is valid.
bool result = IronPdf.License.IsValidLicense("IRONPDF-MYLICENSE-KEY-1EF01");

// Check if IronPdf is licensed successfully 
bool is_licensed = IronPdf.License.IsLicensed;

' Check if a given license key string is valid.
Dim result As Boolean = IronPdf.License.IsValidLicense("IRONPDF-MYLICENSE-KEY-1EF01")

' Check if IronPdf is licensed successfully 
Dim is_licensed As Boolean = IronPdf.License.IsLicensed

VB C#

Note: After adding a license always remember to clean and republish you application to avoid potential mistakes in deployment.