Rendarium.Windows.x64 2026.9.8

Rendarium PDF Library for .NET (Windows x64)

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Overview

Rendarium for .NET can be integrated into your applications to create, edit and merge PDF documents, convert HTML to PDF or images, convert Word, Excel, RTF and Markdown to PDF, extract text and images from PDFs, search text in PDFs and convert PDF pages to images.

The library targets .NET Standard 2.0 and can be used in .NET Core and .NET Framework applications deployed on Windows, Linux and macOS platforms, including Azure App Service, Azure Functions and Docker.

Package structure

Rendarium for .NET has a modular architecture, with separate NuGet packages for each major component to prevent unnecessary files from being included in your applications.

This metapackage references all Rendarium for .NET packages required to run on Windows x64 platforms.

It installs the Windows x64 runtime. For Windows ARM64, the additional package Rendarium.Windows.Arm64 can be referenced on its own or alongside this package.

For Linux x64, Linux ARM64 and macOS ARM64, the packages Rendarium.Linux.x64, Rendarium.Linux.Arm64 and Rendarium.MacOS can be referenced on their own or alongside this package.

Compatibility

The compatibility list of this package includes the following platforms:

• Windows 10, 11 and Windows Server 2016 to 2025 (x64)
• .NET 10.0, 9.0, 8.0, 7.0, 6.0 and .NET Standard 2.0
• .NET Framework 4.7.2 to 4.8.1
• Azure App Service and Azure Functions for Windows
• Windows Virtual Machines
• Docker containers for Windows
• Web, Console and Desktop applications

Main Features

• Create, edit and merge PDF documents
• Create PDF/UA and PDF/A compliant documents
• Apply HTML stamps, headers and footers to PDFs
• Generate password-protected and digitally signed PDFs
• Convert HTML with CSS, web fonts and JavaScript to PDF
• Generate PDF/UA and PDF/A compliant documents from HTML
• Convert HTML to JPEG, PNG and WebP images
• Convert SVG to PDF
• Convert Word DOCX to PDF
• Convert Excel XLSX to PDF
• Convert RTF to PDF
• Convert Markdown to PDF
• Convert PDF to text
• Search text in PDF documents
• Convert PDF pages to images
• Extract images from PDF pages

Installation

On Windows platforms, the Rendarium runtime does not require the installation of additional dependencies.

Install the package using your preferred NuGet package manager.

License key

Set the license key once, before the first conversion. An empty or missing key runs the library in demo mode: the full engine is available and the generated documents are watermarked.

Rendarium.Core.Licensing.LicenseKey = "your-license-key";

The same key works on all platforms and covers all releases published up to its horizon.

Related packages

• Rendarium.Windows.Arm64 (Windows ARM64)
  https://www.nuget.org/packages/Rendarium.Windows.Arm64

• Rendarium.Linux.x64 (Linux x64)
  https://www.nuget.org/packages/Rendarium.Linux.x64

• Rendarium.Linux.Arm64 (Linux ARM64)
  https://www.nuget.org/packages/Rendarium.Linux.Arm64

• Rendarium.MacOS (macOS ARM64)
  https://www.nuget.org/packages/Rendarium.MacOS

Rendarium.Core namespace

All components of the Rendarium for .NET library share the same namespace Rendarium.Core and can be used together in the same application.

To use the library in your own code, add the following using directive at the top of your C# source file:

using Rendarium.Core;

Getting Started

For documentation and code samples, please visit: https://rendarium.com/docs

You can copy the C# code lines from the section below to create a PDF document from a web page or from an HTML string and save the resulting PDF to a memory buffer for further processing, to a PDF file or send it to the browser for download in ASP.NET applications.

C# Code Samples

To convert a HTML string or a URL to a PDF file you can use the C# code below.

// create the converter object in your code where you want to run conversion
HtmlToPdfConverter converter = new HtmlToPdfConverter();

// convert the HTML string to a PDF file
converter.ConvertHtmlToFile("<b>Hello World</b> from Rendarium !", null, "HtmlToFile.pdf");

// convert HTML page from URL to a PDF file
string htmlPageURL = "https://rendarium.com";
converter.ConvertUrlToFile(htmlPageURL, "UrlToFile.pdf");

To convert a HTML string or a URL to a PDF document in a memory buffer and then save it to a file you can use the C# code below.

// create the converter object in your code where you want to run conversion
HtmlToPdfConverter converter = new HtmlToPdfConverter();

// convert a HTML string to a memory buffer
byte[] htmlToPdfBuffer = converter.ConvertHtml("<b>Hello World</b> from Rendarium !", null);

// write the memory buffer to a PDF file
System.IO.File.WriteAllBytes("HtmlToMemory.pdf", htmlToPdfBuffer);

// convert a URL to a memory buffer
string htmlPageURL = "https://rendarium.com";
byte[] urlToPdfBuffer = converter.ConvertUrl(htmlPageURL);

// write the memory buffer to a PDF file
System.IO.File.WriteAllBytes("UrlToMemory.pdf", urlToPdfBuffer);

To convert in your ASP.NET Core applications a HTML string or a URL to a PDF document in a memory buffer and then send it for download to browser you can use the C# code below.

// create the converter object in your code where you want to run conversion
HtmlToPdfConverter converter = new HtmlToPdfConverter();

// convert a HTML string to a memory buffer
byte[] htmlToPdfBuffer = converter.ConvertHtml("<b>Hello World</b> from Rendarium !", null);

FileResult fileResult = new FileContentResult(htmlToPdfBuffer, "application/pdf");
fileResult.FileDownloadName = "HtmlToPdf.pdf";
return fileResult;

Free Trial

There is no separate trial package. Without a license key the library runs in demo mode: the full engine is available and the generated documents are watermarked. Paste your license key to activate the library.

You can evaluate the library for free as long as it is needed to ensure that the solution fits your application needs. Code samples and documentation are available on the Rendarium Documentation page of the website.

Licensing

Rendarium licenses are perpetual and use calendar versioning (year.month.patch). Each license key covers all releases published up to its horizon (year.month) and those releases keep working forever. Releases published after the horizon require a renewal, which extends the horizon by 12 months.

Available editions: Developer (one developer), Company (unlimited developers, one company) and Company Redistribution (Company plus the right to redistribute applications embedding Rendarium to third parties).

You can buy a license on the pricing page and find more details about licensing in the documentation.

Support

For technical and sales questions or for general inquiries about our software and company you can contact us using the email addresses from the contact page of the website.