Best PDF SDK of 2026

Apryse (formerly PDFTron) makes documents work harder for you. We give organizations the power to handle the full document lifecycle — from secure server-side processing to smooth web-based collaboration — without relying on third-party services. With Apryse, you can: Integrate advanced document capabilities like viewing, editing, annotation, and e-signature directly into your applications. Deploy on your own infrastructure for maximum control, privacy, and compliance. Scale effortlessly with technology built for high-volume, enterprise-grade workflows. Deliver modern web experiences that are fast, accessible, and reliable across browsers and devices. Trusted worldwide, Apryse helps enterprises, developers, and small businesses simplify workflows, cut costs, and deliver better digital document experiences.

Nutrient provides an extensive solution for all your PDF requirements, delivering tools that seamlessly operate PDF features across any platform. 1. SDK: Incorporate advanced PDF functionality into iOS, Android, Windows, web, or any cross-platform technology, supplying abilities like PDF viewing, annotation, collaboration, and beyond. 2. Libraries: Employ our powerful .NET and Java libraries to enhance your backend applications with batch processing of redactions and PDF forms, OCR'd scanned text, and PDF document editing, all directly from your application server. 3. Processor: Our agile PDF microservice, Processor, enables rapid generation of PDFs from HTML, including HTML forms, as well as Office-to-PDF conversions, OCR, redaction, and XFDF combining and exporting. 4. PDF API: Take advantage of our hosted PDF API to generate, convert, and alter PDF documents in your workflows. We handle the development and server management, freeing you up to concentrate on your business. At Nutrient, we're not just a tool; we're a committed ally in your success. Gain direct contact with our engineers for expert guidance, utilize comprehensive examples to simplify integration, and make the most of our top-tier documentation.

PrizmDoc helps web developers embed secure secure and responsive HTML5 document viewing, document editing, and native spreadsheet viewing and editing within your own web application or system solution. Due to its extreme flexibility, PrizmDoc can be supported on virtually any platform, and in any programming language that supports REST API calls. Key features can be easily turned on or off depending on your application’s needs, along with user-based permissions to protect proprietary logic, and you can customize the UI layout or style. PrizmDoc can be self-hosted on your own infrastructure or accessed through a fully managed backend on Accusoft’s public or private cloud. And with best-in-class support, Accusoft’s Enablement Services to ensure a seamless PrizmDoc implementation.

Fast and efficient Document APIs for.NET Standard2.0 and Java Get total document control with ultrafast, low-footprint document APIs designed for enterprise apps. Create, load, edit, and save spreadsheets, images, PDF, and DOCX files. Quickly create large spreadsheets, Word, images, PDF documents, and large spreadsheets. Excel, Word, and Acrobat are independent. Run on Windows, Mac and Linux. Deploy to Azure or AWS Lambda. What’s New in GrapeCity Documents v5: - Full support for .NET 6 - SVG support for GrapeCity Documents for PDF and Imaging - Print PDF documents on Windows with GrapeCity Documents for PDF - UI enhancements for GrapeCity Documents for PDF Viewer - And much more!

Add PDF Features with 2 API calls Open, Edit, View PDF. Two API calls and a configuration file are all you need. In less than a day, your app can import, view, edit, and open PDF features. The SDK can be used to neutralize differences between formats. This includes cropping, fills, color management, and fonts. The PDF Conversion SDK can convert all PDF versions, including ISO Standard PDF 2.0. Any PDF file or print-ready memory can be used as input. Conversions are seamless without any intermediate steps or compromises in quality. No printer driver. The PDF Conversion SDK works on Windows, MacOS, and Linux. It supports.NET. Included is an example code. Removes redundant information & compresses data. This provides great performance for web and application browsing.

Anvil offers businesses that need to handle a large number of PDFs—whether for filling, generating, maintaining, or signing—a flexible and customizable workflow platform that is embedded and driven by logic. This solution allows organizations to efficiently manage their document processes while ensuring a streamlined user experience.

pdfToolbox provides robust and flexible PDF processing capabilities that are seamlessly integrable, allowing for both quick visual inspections and fully automated handling of large volumes of files. Leveraging reliable Adobe technology, pdfToolbox effectively addresses and resolves even the most intricate issues, facilitates color management, supports imposition, and allows for conversion to and from PDF formats. This technology is widely utilized by a diverse range of users including small businesses, major publishing houses, and print service providers, along with OEMs who incorporate it into their own offerings. The Desktop version of pdfToolbox serves as a manual PDF preflight and correction tool, available either as a plug-in for Adobe Acrobat Pro or as a standalone application. Designed with prepress operators in mind, pdfToolbox provides an intuitive interface for all pre-press tasks, enabling users to access any necessary function in just three straightforward steps. Furthermore, users can personalize the setup to ensure that their most frequently used actions are always readily accessible. This level of customization enhances productivity and streamlines the workflow for professionals in the print industry.

Previously known as iText, we are now a part of Apryse. With optimized technology and a comprehensive suite of tools, Apryse simplifies even the most complex projects, taking you further, faster. Committed to feature-rich products that are made better, Apryse offers superior document solutions across all applications and enterprise workflows. With iText by Apryse, our diverse customer base includes more than half of the Fortune 500 companies, as well as many government agencies and small companies alike. Our software has grown out of the open source space, and we still believe in the value of open source software. Our core library iText 7 Community and earlier versions iText 5, and iText 2 are all available under the AGPL license. We do offer commercial licensing for customers that do not wish to comply with AGPL and would like to keep their source code private. You may have used iText when you: - received a boarding pass from an airline, - received a PDF invoice or receipt, - received a PDF document after filling in a form, - and many more. For more information, visit the Apryse website.

Our libraries are high-performance and add robust PDF functionality to enterprise, mobile and cloud applications across all platforms. They use the most popular languages and environments. A modern tech stack is essential for integrating with the platform you are working on. Our products are constantly improved and receive new features each month. As your project evolves and your requirements change, we will grow with you. You won’t require high level PDF knowledge as our core API is designed to deliver a seamless developer experience across all 7 of our platforms: Web, Windows, Android, iOS, Mac, UWP and Linux. The developers at Foxit are known for successfully managing edge cases and work with 100% of PDF files across every standard. When you only have to work with one SDK, you decrease your exposure to third parties. Foxit will provide support by real developers, as well as, sample projects, demos, API docs and more for every SDK feature.

Vanilla.PDF is a PDF toolkit that's easy to use and has the most power. The framework supports all PDF formats, PAdES electronic signings, including PKCS#11 interface. A well-documented interface with fully-featured examples assures that the results meet the highest market standards. For any questions, please don't hesitate to contact us!