Looking for an IronPDF Alternative?

Create, Fill, Sign, Convert with Syncfusion .NET PDF Library

Join the growing community of developers who trust Syncfusion PDF Library—powering solutions for Fortune 500 companies worldwide.

79.6% Less Memory Usage
Up to 64% faster performance
24/5 Premium Support

79.6% Less Memory Usage
Up to 64% faster performance
24/5 Premium Support

No credit card required.

Trusted by the world's leading companies

Interactive .NET PDF Library Playground

This example code shows how to create a PDF document using the Syncfusion .NET PDF library with just a few lines of code in C#.

Performance Benchmark

Syncfusion Outperforms IronPDF in Speed & Memory Efficiency.

Key operations

Syncfusion PDF

IronPDF

Convert 10 images to PDF

10s

Split 60-page PDF

Merge PDF

1.5s

2.5s

HTML to PDF

10s

42s

Word to PDF

3.7s

15s

Apply Watermark (60 pages)

2.8s

59s

Extract Text (60 pages)

2.24s

7.5s

Redact text

11s

17.88s

Compress 1.32MB PDF

Apply watermark

31MB

152MB

Word to PDF

60MB

80MB

Convert 10 Images to PDF

33MB

120MB

Why Syncfusion is the Right Pick for You?

20+ Years Proven

Mature, stable, and trusted by enterprises in mission-critical applications for nearly two decades.

Secure and Private

No external calls or data sharing—everything processes on your server for maximum security and compliance.

Continuous Development

Actively maintained with regular updates and feature enhancements based on real customer feedback.

Backed by Global Trust

Trusted by 1M+ developers, 36K+ companies, and 400+ Fortune 500 enterprises over 24+ years of innovation and excellence.

Microsoft Collaboration

We actively collaborate with Microsoft to advance the .NET developer ecosystem. Our free and open-source .NET MAUI Toolkit is a key contribution, empowering developers to build modern cross-platform apps with ease.

Enterprise-Proven Solutions

Our UI components power high-scale SaaS platforms, trusted to handle millions of user interactions daily. Syncfusion’s reliability is proven in our own enterprise products, including BoldDesk and BoldSign, solutions that are widely adopted and loved by customers across industries.

Developer Support That Never Lets You Down

IronPDF users often face slow support and strict ticket limits. Syncfusion turns that around with fast, unlimited support and rich documentation that speeds up your development.

Documentation

Easy-to-follow guides, detailed API references, and real-world code examples via GitHub, NuGet, and our official docs.

Dedicated support

Unlimited tickets and fast 24-hour guaranteed responses via live chat, forums, and our support portal.

Community Engagement

A thriving developer community, frequently updated samples, and constantly evolving documentation.

What Developers Say About IronPDF — And How Syncfusion Solves It

Developers struggle with slow support, steep learning curves, and complex APIs in IronPDF. Syncfusion fixes this with SLA-backed support, clear docs, and a simple, intuitive API.

IronPdf is simply not reliable enough. The PDF does not AT ALL look like the DOCX document.

— G2 user
With Syncfusion PDF Library, what you see in your DOCX is exactly what you get in your PDF. Our rendering engine ensures high-fidelity conversions, preserving layouts, fonts, images, and formatting—every single time.

"Apart from the payment requirement for production use, some users may find the learning curve steep, especially if they are new to PDF manipulation libraries. The documentation, while comprehensive, could benefit from more beginner-friendly resources."

— G2 user
At Syncfusion, we prioritize developer experience. That’s why our PDF Library is backed by beginner-friendly clear documentation, getting-started guides, real-world code examples, and dedicated support. Whether you're a first-timer or an expert, we make your PDF integration journey smooth and productive.

Feature-by-Feature Comparison

Choosing the right .NET PDF Library can make or break your document processing workflow. Here’s how Syncfusion and IronPDF stack up on key features:

Features

Syncfusion PDF

IronPDF

PDF Creation & Editing

Yes

Merge/Split PDF

Yes

Annotations

Advanced

Basic

Flatten annotations

Yes

PDF Forms

Yes

Import and export form data from FDF, XFDF, and XML

Yes

PDF Viewer(s)

Yes

Digital Signatures

Advanced

Basic

PDF Encryption

Yes

Redaction

Text, Images, Forms

Text Only

Draw Barcode to PDF

Yes

HTML to PDF

Chromium Engine

Create PDF table

Yes

PDF template and layers

Yes

Word to PDF

Yes

Excel to PDF

Yes

PPTX to PDF

Yes

PDF/UA2 Accessibility

Yes

PDF/A-4

Yes

Memory Efficiency

Optimized

High Memory Consumption

Modular Architecture

Yes

What Our Customers Say

Real feedback from developers who rely on Syncfusion every day.

Allows easy integration of Excel and pdf into C# desktop programming.

G2 Review

We searched for a Word to PDF conversion library and we found Syncfusion. It has this and a lot more! We build a prototype, then the final product. No problems! Great documentation, even better support - super fast reply and quick feature request realization.

G2 Review

We have been users of Syncfusion Essential Studio for many years. We particularly make use of its Excel, Word and PDF capabilities and it forms a key component for delivering our own custom solutions.

G2 Review