Best PDF SDKs Software - Page 2

How Many PDF SDKs Software Products Does G2 Track?

Total Products under this Category: 45

Category Stats (Sep 2026)

  • Average Rating: 4.51/5 (↓0.04 vs Aug 2026) The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: Nitro PDF (+0.05%) - Among all products in this category, Nitro PDF recorded the largest rating increase compared to last month

Last updated: September 06, 2026

How Does G2 Rank PDF SDKs Software Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 1,700+ Authentic Reviews
  • 45+ Products
  • Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

G2 Grid® for PDF SDKs Software

G2 Grid® for PDF SDKs Software plotting products by satisfaction and market presence

Highlighted products: Apryse PDF SDK, Nutrient SDK, Foxit PDF SDK, Anvil, and iText by Apryse.

Underlying data: [Grid® JSON](https://www.g2.com/categories/pdf-sdks/grids.json?focus%5B%5D=apryse-pdf-sdk&focus%5B%5D=nutrient-sdk&focus%5B%5D=foxit-pdf-sdk&focus%5B%5D=anvil-foundry-anvil&focus%5B%5D=itext-by-apryse)

Nitro PDF

1. What is Nitro PDF? Nitro PDF is a full-featured PDF editor that enables you to create, edit, convert, sign, and secure PDF documents. It is designed for individuals, small businesses, and enterprises as a cost-effective alternative to Adobe Acrobat, combining powerful functionality with an intuitive interface that works across devices. 2. What are the main features of Nitro PDF? Nitro PDF is a comprehensive solution for creating, editing, and securing documents across Windows, Mac, iOS, and web browsers. It includes powerful AI productivity tools and is built with an intuitive interface mirroring the Microsoft Office and Apple toolbars. Key features of Nitro PDF include: • Core Editing: Tools to create, edit, convert, combine, and annotate PDFs, including advanced OCR and secure signing capabilities. • AI Smart Tools: Enhances productivity via smart data extraction, automated form creation, and intelligent document redaction. • Nitro Analytics: Real-time visibility into PDF usage, allowing organizations to measure productivity, prove ROI, and track sustainability. • Nitro Workspace: A centralized cloud hub for accessing PDF and eSign tools, AI assistants, and administration from any device. • Advanced Editing: Create PDFs from any file type and convert PDFs into editable Microsoft Word, Excel, and PowerPoint files while maintaining original layouts. • Powerful OCR (Optical Character Recognition): Turn scanned paper documents and images into fully searchable and editable PDFs with high-accuracy text recognition. Nitro PDF is available in multiple plans to suit different business needs. 3. What support options does Nitro offer? Whether you're a five-person team or a global enterprise, our dedicated support is available 24/7. • Human Support: Nitro offers dedicated customer support, including onboarding, training, and troubleshooting resources, to ensure a smooth experience for your team. • Knowledge Base and Guides: Access hundreds of detailed articles covering product features, integrations, workflows, and best practices. • Video Tutorials: Step-by-step walkthroughs and demonstrations to help you learn and master Nitro tools quickly. • Community Forum: Connect with other Nitro users, share feedback, ask questions, and discover tips and solutions. • Knowledge Assistant: A 24/7 in-app AI assistant providing instant, context-aware guidance on features, workflows, and troubleshooting. 4. Does Nitro PDF support integrations with other business tools? Yes. Nitro PDF integrates with software such as Microsoft Office suite, OneDrive, Dropbox, and other platforms. These integrations simplify document workflows and make it easy to create, edit, and share PDFs directly within your existing environment. 5. How does Nitro ensure document security and compliance? Nitro protects sensitive information with advanced encryption, password protection, granular access controls, and tamper-evident audit trails. Nitro's solutions are designed to meet enterprise and mid-market compliance requirements, including ISO 27001, SOC 2, HIPAA, GDPR, eIDAS, UETA, and the ESIGN Act.

Average Rating: 4.4/5.0

Total Reviews: 378

How Do G2 Users Rate Nitro PDF?

  • Quality of Support: 8.1/10 (Category avg: 9.0/10)
  • Ease of Use: 8.8/10 (Category avg: 8.8/10)

Who Is the Company Behind Nitro PDF?

  • Seller: Nitro, Inc
  • Company Website:
  • Year Founded: 2005
  • HQ Location: San Francisco, CA
  • LinkedIn® Page: www.linkedin.com
    382 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: IT Manager
  • Top Industries: Information Technology and Services, Construction
  • Company Size: 47% Small, 35% Medium

What Do G2 Reviewers Say About Nitro PDF?

AI-generated summary from verified user reviews

Pros
  • Users find Nitro PDF's ease of use remarkable, appreciating its intuitive interface and minimal learning curve.
  • Users love the easy editing features of Nitro PDF, ensuring quick and accurate document management for all skill levels.
  • Users praise Nitro PDF for its exceptional security features and comprehensive editing tools, enhancing overall productivity.
  • Users appreciate the easy conversion feature of Nitro PDF, enabling quick and accurate file management for everyone.
  • Users value the robust PDF processing capabilities of Nitro PDF, enhancing document management and streamlining workflows effectively.
Cons
  • Users report performance issues with Nitro PDF, facing slow processing and uninstallation problems with large documents.
  • Users find the pricing too high, making Nitro PDF less accessible for casual and individual users.
  • Users experience slow performance with Nitro PDF, especially when handling large documents, affecting overall efficiency.
  • Users note the limited features of Nitro PDF, particularly when compared to high-end PDF tools for complex tasks.
  • Users report significant performance issues with Nitro PDF, especially when handling large files or after updates.

What Are Recent G2 Reviews of Nitro PDF?

What Are G2 Users Discussing About Nitro PDF?

pdf noodle

Build PDF workflows in minutes, not sprints. Skip the Figma-to-HTML-to-PDF nightmare. Design templates with AI, tweak visually or in code, then generate invoices, reports, and contracts that look professional. No design skills needed.

Average Rating: 5.0/5.0

Total Reviews: 1

How Do G2 Users Rate pdf noodle?

  • Quality of Support: 10.0/10 (Category avg: 9.0/10)
  • Ease of Use: 10.0/10 (Category avg: 8.8/10)

Who Is the Company Behind pdf noodle?

Who Uses This Product?

  • Company Size: 100% Small

What Do G2 Reviewers Say About pdf noodle?

AI-generated summary from verified user reviews

Pros
  • Users find PDF Noodle to be affordable and easy to integrate, streamlining their reporting processes effectively.
  • Users appreciate the ease of document editing with PDF Noodle, enhancing their reporting processes effortlessly.
  • Users find the ease of creation with PDF Noodle significantly simplifies report development and integration.
  • Users find Ease of Use in PDF Noodle, highlighting its simple integration and intuitive template builder.
  • Users value the easy editing capabilities of PDF Noodle, which significantly streamline report creation and integration.

What Are Recent G2 Reviews of pdf noodle?

PDF Tools SDK

PDF Toolbox SDK is part of Pdftools’ portfolio of quick-to-integrate products that make processing documents a breeze, whether you have thousands of documents or millions. Details PDF Toolbox SDK lets you quickly create high-quality PDF/A-compliant documents from scratch via source code. Add any content such as text and images to existing PDFs and merge and split PDF documents. Designed for ​​document-heavy industries, PDF Toolbox SDK lets you: - Edit PDF Add or remove information like text, stamps, or images. - Create PDFs Generate new PDFs as separate files or merge them with existing PDF files. - Annotate and add forms Create, fill, and extract PDF forms via code. You can also remove, modify, and add annotations. Extensive documentation is available for developers who want to implement PDF Toolbox SDK into their document-processing workflows. ____ About Pdftools Pdftools provides software solutions and developer components for creating, manipulating, and validating PDF and PDF/A files at scale. The company was founded in 2002 by Dr. Hans Bärfuss, a globally renowned PDF expert. In 2022, Pdftools joined forces with Smallpdf to deliver even better document-processing products to its customers.

Average Rating: 4.5/5.0

Total Reviews: 1

How Do G2 Users Rate PDF Tools SDK?

  • Ease of Use: 8.3/10 (Category avg: 8.8/10)

Who Is the Company Behind PDF Tools SDK?

  • Seller: Pdftools
  • Year Founded: 2002
  • HQ Location: Zürich, CH
  • LinkedIn® Page: www.linkedin.com
    35 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 100% Small

What Are Recent G2 Reviews of PDF Tools SDK?

Acrobat SDK

The Adobe Acrobat Software Development Kit is a comprehensive suite of tools designed to assist developers in creating applications that integrate seamlessly with Adobe Acrobat and Acrobat Reader. It includes header files, type libraries, utilities, sample code, and extensive documentation, facilitating the development of software that interacts with Acrobat technology. Key Features and Functionality: - JavaScript Integration: Developers can write scripts to extend Acrobat or Acrobat Reader functionality, either embedded within PDF documents or as external scripts. - Plug-in Development: The SDK allows for the creation of plug-ins using C++ that dynamically link to and enhance the capabilities of Acrobat or Acrobat Reader. - Interapplication Communication : Developers can write separate applications that control Acrobat functionality through interapplication communication methods such as DDE and OLE on Windows, and Apple events/AppleScript on Mac OS. - 64-bit Support: The SDK provides 64-bit public headers, enabling developers to create or upgrade their plug-ins to 64-bit, ensuring compatibility with the latest versions of Acrobat. Primary Value and User Solutions: The Acrobat SDK empowers developers to customize and extend the functionality of Adobe Acrobat and Acrobat Reader, enabling the creation of tailored solutions that meet specific user needs. By providing robust tools for JavaScript scripting, plug-in development, and interapplication communication, the SDK facilitates the development of applications that can manipulate PDF documents, automate workflows, and integrate seamlessly with other software systems. This flexibility allows organizations to enhance productivity, streamline document management processes, and deliver customized user experiences.

Who Is the Company Behind Acrobat SDK?

  • Seller: Adobe
  • Year Founded: 1982
  • HQ Location: San Jose, CA
  • Twitter: @Adobe
    956,842 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    42,975 employees on LinkedIn®
  • Ownership: NASDAQ:ADBE

Who Uses This Product?

  • Company Size: 100% Large

Aquaforest

Who Is the Company Behind Aquaforest?

  • Seller: Nutrient
  • Year Founded: 2011
  • HQ Location: Raleigh, North Carolina USA
  • Twitter: @nutrientdocs
    4,183 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    144 employees on LinkedIn®
  • Phone: +1 888 356 4219

Aspose.PDF for .NET

Aspose.PDF for .NET is a modern and professional PDF API used to create, read-write, modify, and make other operations with PDF files without any external dependencies in a .NET application. You can use Aspose.PDF for .NET in any programming language for .NET or .NET Core. This component is written in managed C# and it allows developers to add PDF creation and manipulation functionality to their Microsoft .NET applications (WinForms, WPF, ASP.NET and .NET Compact Framework)

Who Is the Company Behind Aspose.PDF for .NET?

  • Seller: Aspose
  • Year Founded: 2002
  • HQ Location: Lane Cove West, New South Wales, Australia
  • LinkedIn® Page: www.linkedin.com
    137 employees on LinkedIn®

Aspose.SDK

Aspose.PDF offers a comprehensive suite of free online applications designed to facilitate various operations on PDF files across multiple platforms. Users can effortlessly view, convert, edit, merge, split, annotate, and secure PDF documents without the need for specialized software installations. Key Features and Functionality: - PDF Viewing: Open and view PDF files directly in the browser. - Conversion Tools: Convert PDFs to and from various formats, including Word, Excel, PowerPoint, and images. - Editing Capabilities: Add or remove text, comments, and highlights within PDF documents. - Merging and Splitting: Combine multiple PDFs into one or extract specific pages to create new documents. - Annotation Management: Insert, edit, or remove annotations, watermarks, and signatures. - Security Features: Encrypt PDFs with passwords, remove existing security restrictions, and add digital signatures. - Optimization Tools: Compress PDF files to reduce size without compromising quality. - Metadata Editing: View and modify PDF metadata information. Primary Value and User Solutions: Aspose.PDF addresses the need for accessible, user-friendly tools to manage PDF documents without requiring software installations. By offering a wide range of functionalities online, it empowers users to perform essential PDF operations efficiently, enhancing productivity and streamlining document management tasks.

Who Is the Company Behind Aspose.SDK?

  • Seller: Aspose
  • Year Founded: 2002
  • HQ Location: Sydney, AU
  • Twitter: @aspose
    13,018 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    134 employees on LinkedIn®

Definely PDF

Definely PDF is a specialized tool designed to enhance the review and comprehension of legal documents in PDF format. By enabling users to access critical information—such as cross-references, defined terms, and unused terms—with a simple double-click, it ensures that professionals can efficiently navigate complex legal texts without losing context.

Who Is the Company Behind Definely PDF?

  • Seller: Definely
  • Year Founded: 2017
  • HQ Location: London, GB
  • LinkedIn® Page: www.linkedin.com
    96 employees on LinkedIn®

DioDocs

Who Is the Company Behind DioDocs?

  • Seller: MESCIUS
  • Year Founded: 1980
  • HQ Location: Pittsburgh, PA
  • Twitter: @MESCIUS_inc
    3,846 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    314 employees on LinkedIn®

GDPicture.net

Use GdPicture.NET Imaging SDK to capture, compose, display, annotate, clean-up, edit and print documents from within WinForm, WPF and WEB applications

Who Is the Company Behind GDPicture.net?

  • Seller: Nutrient
  • Year Founded: 2011
  • HQ Location: Raleigh, North Carolina USA
  • Twitter: @nutrientdocs
    4,183 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    144 employees on LinkedIn®
  • Phone: +1 888 356 4219

GemBox.Pdf

GemBox.Pdf is a .NET library that enables you to read, write, edit, and print PDF files from .NET applications. With GemBox.Pdf you get a fast and reliable library that’s easy to use and doesn't depend on Adobe Acrobat. It requires only .NET so you can deploy your applications without having to think about other licenses.

Who Is the Company Behind GemBox.Pdf?

  • Seller: GemBox Software
  • Year Founded: 2006
  • HQ Location: Grad Zagreb, HR
  • Twitter: @GemBoxLtd
    29 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    10 employees on LinkedIn®
Adam Crivello
AC
Researched and written by Adam Crivello
Updated October 3, 2024