The license continues to work perpetually for the version purchased at the time of license expiry. Access to new versions requires purchasing an upgrade or renewal.
static void Main()
<appSettings> <add key="GemBox.Document.LicenseKey" value="YOUR-LICENSE-KEY-HERE"/> </appSettings>
Covers all developers within a single physical office location or building.
Once you have a valid license key, use it at the start of your application (e.g., in Program.cs , Global.asax , or static constructor). Gembox.document License Key
using System; using GemBox.Document; namespace GemBoxApplication class Program static void Main(string[] args) // Set your professional license key here ComponentInfo.SetLicense("YOUR-GEMBOX-DOCUMENT-KEY"); // Your document processing code goes here DocumentModel document = new DocumentModel(); document.Content.Blocks.Add(new Paragraph(document, "Hello World!")); document.Save("Output.docx"); Use code with caution. 2. ASP.NET Core Web Applications
using GemBox.Document; // To use Free Mode: ComponentInfo.SetLicense("FREE-LIMITED-KEY"); // To use Professional Mode (replace "YOUR-LICENSE-KEY" with your actual key): // ComponentInfo.SetLicense("YOUR-LICENSE-KEY"); Use code with caution. VB.NET Implementation
GemBox offers a fair and transparent pricing model. As their documentation states: "Our licensing is very simple; every developer working with our component needs to be covered by a developer license".
In ASP.NET Core web apps, register the license key inside the Program.cs file before configuring your application pipeline or dependency injection containers. The license continues to work perpetually for the
: Enables use of the library for free, including in commercial projects. Limitations : Strictly limited to the first 20 paragraphs of a document during reading or writing. Trial Key (Same as Free)
Many "key generators" are shells for malicious software that can compromise your development machine or your company’s network.
GemBox licenses are perpetual—they never expire. Once you buy a version, you can use it forever. GemBox.Document License Key Types and Pricing
class Program
GemBox.Document requires a license key for production use. You can obtain one by purchasing a license or requesting a free trial from the official GemBox website. Implementing the key is straightforward using ComponentInfo.SetLicense() . Avoid using cracked keys – they pose security, legal, and ethical risks. If budget is a constraint, consider open-source alternatives like or Open XML SDK , though they may lack the same ease of use and format support.
The entertainment value isn’t in the API itself—it’s the and the relief of a tool that just works.
Using unauthorized software in commercial applications exposes companies to legal liability and audit risks. Professional software development requires proper licensing to protect both developers and their clients.