No Limit Software
Document software for .NET developers

Generate, convert and process PDF documents from your own code.

No Limit Software builds the libraries that turn HTML, Word and Excel into PDF and let applications create, edit, sign and process PDF documents — on Windows, Linux and macOS, without any external service.

Explore the software Contact us
  • Chromium-based HTML rendering
  • PDF/UA and PDF/A generated automatically
  • Windows, Linux, macOS, Docker, Azure
  • Perpetual licenses, offline keys
In production at organizations worldwide
  • Microsoft
  • Intel
  • Siemens
  • Boeing
  • Visa
  • HP
  • Philips
  • FedEx
  • Deloitte
  • JP Morgan
  • Ericsson
  • AT&T
  • Deutsche Telekom
  • Honeywell
  • Electronic Arts
  • Thomson Reuters
  • Bank of America
  • Deutsche Bank
  • The World Bank
  • Credit Suisse
  • Wells Fargo
  • Volkswagen
  • Volvo Trucks
  • Lockheed Martin
  • GlaxoSmithKline
  • Novartis
  • Pfizer
  • Procter & Gamble
  • Johnson & Johnson
  • United Nations
  • The Coca-Cola Company
  • Xerox
  • Nikon
  • Nestlé
  • United Airlines
  • Qatar Airways
  • Chevron
  • KPMG
  • PricewaterhouseCoopers
  • Accenture
  • Capgemini
  • Stack Exchange
  • Scribd
  • Macmillan Publishers
  • BNP Paribas
  • ING
  • U.S. Department of Defense
  • UCLA
What the software does

Every document operation an application needs

The software ships as separate components with one shared API style, so a project references only the engines it uses and every conversion is a few lines of code.

HTML to PDF

A Chromium-based engine renders current HTML, CSS and JavaScript to standard. Headers and footers with page numbers, repeated table headers, CSS page breaks, outlines, tables of contents, HTML forms to PDF forms.

CSSJavaScriptSVGWeb fonts

Word to PDF

Accurate conversion of complex Word documents without Microsoft Office installed — tables of contents, headers, footers, stamps and document security.

DOCXNo Office needed

Excel to PDF

Convert workbooks with their own page settings — all worksheets or only the first, keeping Excel column widths or reflowing the content — with headers, footers, stamps and security.

XLSXPage settings

RTF and Markdown to PDF

Rich text and Markdown documents converted to PDF with tables of contents, headers, footers and stamps — the same options as the Word converter.

RTFMarkdown

Create PDF from code

A core PDF API for building documents programmatically: text and fonts, images and vector graphics, pages and layers, forms, bookmarks, links and attachments.

GraphicsFormsBookmarks

Merge, split and stamp

Combine documents, extract page ranges, stamp text and images, add watermarks, convert PDF to HTML and print — the tools for documents that already exist.

MergeSplitPDF to HTMLPrint

Security and digital signatures

Encrypt documents, set permissions for printing, copying and editing, and apply digital signatures — to generated documents and to existing files.

EncryptionPermissionsSignatures

PDF to text and search

Extract text in the original layout or optimized for reading, search text and get the exact position of every match on the page.

LayoutReading orderPositions

PDF to image and image extraction

Render pages to PNG with control over color space, resolution and background transparency, and extract the images embedded in a PDF, preserving transparency.

PNGResolutionTransparency
One API style

Create a converter, call it, get bytes.

Every converter follows the same three steps and every method has an async variant. Document options — headers, footers, security, standards — live on the converter, so what you learn for HTML applies to Word, Excel and the rest.

  • Convert from a URL, an HTML string or a file, to memory or to a file
  • Synchronous and async methods for web servers and services
  • Documentation with working C# code for every feature
Program.cs// Convert a web page to a PDF in memory
var converter = new HtmlToPdfConverter();
byte[] pdf = converter.ConvertUrl("https://example.com");
File.WriteAllBytes("page.pdf", pdf);

// Or an HTML string, with a base URL for relative links
pdf = converter.ConvertHtml("<b>Hello World</b>", "https://example.com");
Standards

Compliant documents, generated automatically.

Accessibility and archiving requirements are met at generation time, not in a separate step. The software produces tagged, accessible PDF/UA documents and archival PDF/A documents — alone or combined — and signs and encrypts them in the same pass.

  • PDF/UA-1 and PDF/UA-2 for accessibility
  • PDF/A-2, PDF/A-3 and PDF/A-4 for long-term archiving
  • Digital signatures, encryption and permissions
PDF/UA-1 · 2Accessible, tagged documents
PDF/A-2 · 3 · 4Archival documents
SignaturesDigital signing of generated and existing files
EncryptionPasswords and usage permissions
Deployment

Runs where your .NET code runs.

Each component is a NuGet package with the rendering engine inside. Nothing else has to be installed on the machine: no browser, no Office, no print drivers and no license server. Documents are generated inside your application and never leave your environment.

  • Windows, Linux and macOS, x64 and ARM64
  • Docker containers and Azure, with ready-to-use configurations
  • A lighter engine with .NET Framework support for existing applications
  • Windows 10, 11, Server 2016–2025
  • Linux x64 and ARM64
  • macOS 12+, Apple Silicon
  • Docker, Linux and Windows containers
  • Azure App Service and Functions
  • .NET 6 to 10, .NET Standard 2.0
  • .NET Framework 4.6.2 to 4.8.1
  • NuGet packages, one per component
Licensing

Evaluate freely, license once

The software is licensed the way developers expect: try it without registration, buy a perpetual license, keep the keys offline.

Free evaluation

Without a license key the software runs in demo mode with a watermark — no registration required, and demo applications with full source code are available.

Perpetual licenses

A license never expires and includes a year of updates and technical support; maintenance can be renewed afterwards.

Offline license keys

Keys are validated inside your application. No license server, no activation calls, nothing to keep reachable in production.

Redistribution

Redistribution licensing is available for software vendors shipping the components inside their own products.

Customers

Trusted across every industry

The components run inside the applications of companies, universities and public institutions worldwide. A short selection, in no particular order.

Technology and services

  • Microsoft
  • Intel
  • HP
  • Philips
  • Ericsson
  • Deutsche Telekom
  • Electronic Arts
  • Thomson Reuters
  • Accenture
  • Capgemini
  • Deloitte
  • KPMG
  • PricewaterhouseCoopers
  • Stack Exchange

Finance and insurance

  • Visa
  • JP Morgan
  • Bank of America
  • Deutsche Bank
  • Credit Suisse
  • Wells Fargo
  • BNP Paribas
  • ING
  • Danske Bank
  • Lloyds
  • Generali
  • The World Bank
  • International Monetary Fund

Industry, energy and transport

  • Siemens
  • Boeing
  • Lockheed Martin
  • Volkswagen
  • Volvo Trucks
  • Scania
  • Honeywell
  • Schneider Electric
  • Chevron
  • FedEx
  • United Airlines
  • Qatar Airways
  • Tetra Pak
  • Bridgestone

Public sector, health and education

  • United Nations
  • U.S. Department of Defense
  • Department of the Treasury
  • National Institutes of Health
  • Metropolitan Police
  • European Defence Agency
  • GlaxoSmithKline
  • Novartis
  • Pfizer
  • Johnson & Johnson
  • UCLA
  • University of Pennsylvania
  • Michigan State University

Questions about the company or the software?

No Limit Software SRL, Bucharest, Romania. Write to us and a person will answer.

office@nolimitsoftware.com