List of the Top 9 On-Prem PDF SDK in 2025

Pdftools offers robust solutions for handling vast numbers of documents, potentially reaching into the millions. Tailored for sectors that heavily rely on documentation, the Pdftools suite of SDKs aims to enhance the speed, simplicity, and overall ease of your document workflows, reducing stress along the way. Built on reliable SDKs and APIs, Pdftools products integrate effortlessly into your current systems and applications. With the capacity to process thousands of documents each minute, our tools prioritize speed and efficiency. As engineers committed to excellence, we ensure that only the most trustworthy, usable, and well-documented platforms are utilized. While file sizes can be minimized, we guarantee that quality and interactivity remain intact. Additionally, our solutions help ensure that your documents adhere to long-term archiving standards. Comprehensive documentation accompanies every aspect of our products, allowing for a seamless onboarding experience. With Pdftools, you can transform your document management approach and unlock new efficiencies.

Apryse, which was previously known as PDFTron, is transforming the document landscape. It enables precise viewing, annotating, editing, creating, and generating of PDFs across various platforms, including web, mobile, desktop, and server applications. The technology offered by Apryse is compatible with all leading platforms and supports a wide array of file formats, such as PDF, Microsoft Office, and CAD files. By implementing this solution on your own infrastructure, you can manage the entire document and data lifecycle without the need to rely on external server services. This independence allows organizations to enhance their workflows and maintain greater control over their document processes.

Nutrient offers a comprehensive suite of solutions tailored to meet all your PDF needs, providing tools that effortlessly handle PDF functionalities on any platform. 1. SDK: Integrate sophisticated PDF capabilities into iOS, Android, Windows, the web, or any cross-platform technology, offering features such as PDF viewing, annotation, collaboration, and much more. 2. Libraries: Use our robust .NET and Java libraries to empower your backend systems with capabilities for batch processing of redactions and PDF forms, OCR for scanned text, and editing of PDF documents, all directly from your application server. 3. Processor: Our nimble PDF microservice, Processor, facilitates the quick creation of PDFs from HTML, including HTML forms, alongside conversions from Office to PDF, OCR processing, redaction, and the combination and exporting of XFDF. 4. PDF API: Leverage our hosted PDF API to create, convert, and modify PDF documents within your workflows. We manage the development and server operations, allowing you to focus solely on growing your business. At Nutrient, we see ourselves not merely as a tool but as a dedicated partner in your journey to success. You can easily reach out to our engineers for specialized support, access thorough examples to aid in integration, and utilize our premium documentation to maximize your experience. Additionally, we are committed to continuous improvement and innovation, ensuring our solutions evolve with your needs.

Global OEMs, SaaS providers, and enterprise users utilize the Adobe PDF Library to streamline the processes of creating, editing, and managing PDF documents. As an authorized Adobe partner, our SDK is built using the same source code as Acrobat, ensuring top-notch stability, reliability, and quality. Supported programming languages include .NET, .NET Framework, Java, and C/C++, and it is compatible with platforms such as Windows, Linux, and MacOS, with package management facilitated through NuGet and Maven. The library boasts a wide range of capabilities, encompassing annotations, content creation and modification, color management, and various extraction options for text, images, and forms. It also offers features for compression, optimization, and conversion to formats like PDF/A, PDF/X, EPS, PostScript, XPS, and ZUGFeRD, along with robust display and printing options. Moreover, it allows for the import, export, and flattening of both static and dynamic XFA forms, along with AcroForms, and supports a variety of image operations including extraction, rendering, and thumbnail creation. The optimization functionality enhances file size and content, while OCR capabilities enable text addition to documents and images. Additionally, users can convert PDFs to Office formats such as Word, Excel, and PowerPoint, and implement security measures including viewer settings, redactions, password protection, encryption/decryption, and watermarking. Pricing structures are adaptable for OEMs, SaaS solutions, and end-users, based on their specific usage needs. Accelerate your development process and reach the market more swiftly with the Adobe PDF Library; take advantage of the free trial available for download today.

PrizmDoc empowers web developers to incorporate secure and dynamic HTML5 document viewing and editing functionalities, along with native spreadsheet capabilities, directly into their web applications or system solutions. Its remarkable adaptability ensures support across almost any platform and programming language that can perform REST API calls. Users can easily activate or deactivate key features based on the specific requirements of their applications, and implement user-specific permissions to safeguard proprietary information. Additionally, customization of the UI layout and style is available to enhance user experience. PrizmDoc can either be self-hosted within your own infrastructure or utilized via a fully managed backend provided by Accusoft’s public or private cloud services. Furthermore, Accusoft offers exceptional support through its Enablement Services, facilitating a smooth implementation of PrizmDoc for all users. This comprehensive flexibility and support make PrizmDoc an ideal choice for modern web development needs.

ComPDFKit provides a high-quality PDF SDK, API, and Server tailored for businesses, organizations, startups, and developers alike. Its platform allows seamless integration of features such as document annotation, editing, conversion, form filling, and signing into various applications or products, which ultimately helps in reducing both time and costs. The software is versatile and works across multiple operating systems, including Windows, Web, Android, iOS, Mac, and Linux, as well as supporting cross-platform frameworks like React Native, Flutter, and Electron with minimal coding effort. Recent updates from ComPDFKit include the following enhancements: 1. ComPDFKit API Register now to receive 1000 free file processing each month, allowing for comprehensive editing and converting of PDF documents, as well as functionalities such as splitting, merging, inserting, rotating, deleting, and extracting PDF pages, alongside OCR processing. 2. Free Online Tools Utilize ComPDFKit's online tools to effortlessly convert PDF files to and from various formats, including docx, xlsx, pptx, png, jpg, html, txt, csv, and rtf. 3. Web Demo Explore the online demo to view, edit, annotate, compare, sign, encrypt, decrypt, watermark PDFs, and create or fill out PDF forms at no charge. 4. Community License Start-up companies and individual developers can benefit from competitive pricing options through ComPDFKit, helping you to develop customized applications while enjoying exclusive discounts and offers. Additionally, the user-friendly interface and comprehensive support further enhance the experience for developers looking to leverage PDF functionalities in their projects.

Enhance your application with PDF functionalities by utilizing just two API calls: Open, Edit, and View PDF. With a simple configuration file and these API calls, you can enable your app to swiftly import, view, modify, and open PDF documents within a single day. The SDK is designed to bridge format discrepancies, offering features such as cropping, color management, fills, and font adjustments. It facilitates the conversion of any PDF versions, including the ISO Standard PDF 2.0, allowing for versatility with any PDF file or print-ready document as an input. The conversion process is streamlined, ensuring a smooth experience without any intermediary steps or loss in quality, and it eliminates the need for a printer driver. Compatible with Windows, MacOS, and Linux, the PDF Conversion SDK also supports .NET and comes with sample code for your reference. Additionally, it effectively removes unnecessary data and compresses files, leading to enhanced performance during web and application browsing, making it an efficient choice for developers. By adopting this technology, you can significantly improve the user experience when handling PDF files.

The PDF Xpansion SDK 17 provides a comprehensive suite of features, methods, and capabilities that empower software developers to design applications and solutions that support PDF/A compliance. With an array of tools available for creating, editing, and printing PDF, PDF/A, and XPS documents, users can seamlessly display and print these documents while facilitating conversions and file format exchanges. Additionally, the SDK includes eInvoicing capabilities for ZUGFeRD Factur-X, XRechnung, and Factur-X formats, enabling developers to incorporate EU-compliant electronic billing functionalities that adhere to established standards. This robust framework supports integration into both Windows desktop applications and Windows Apps, offering developers the ability to selectively purchase only the functionalities they need, thus enhancing the SDK’s adaptability and efficiency. Ultimately, this flexibility allows for tailored solutions that meet specific project requirements.

The Aquaforest SDK is a comprehensive toolkit tailored for PDF processing, featuring capabilities such as content extraction, the creation of searchable PDFs, and advanced OCR functionalities that utilize both the standard Aquaforest engine and the upgraded Canon IRIS engine, as well as handwriting recognition through Google and Microsoft APIs. It includes a powerful PDF and barcode toolkit optimized for performance, capable of utilizing up to 64 processing cores for various tasks. This SDK enables efficient analysis of PDF documents, automating the extraction of name/value pairs for subsequent applications. Among its extensive manipulation options are features for merging PDFs, managing attachments, extracting content, processing XMP metadata, and ensuring PDF/A compliance, among others. The standard OCR engine remarkably supports 23 languages and is accessible across all SDK versions, which enhances its versatility in multiple contexts. In addition, the tool integrates effortlessly with cloud OCR services from Google and Microsoft, providing significant advantages for specialized tasks like handwriting recognition. The SDK also excels in reading and identifying a diverse array of standard barcode formats, further expanding its potential use cases in various industries. With continuous updates and improvements, the Aquaforest SDK remains a leading choice for developers seeking robust PDF processing solutions.