List of the Top 25 SaaS 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.

The pdfRest API Toolkit was crafted by developers for developers, enabling swift integration of PDF workflows into business applications with ease and efficiency. This toolkit encompasses a comprehensive suite of PDF processing tools created by digital document specialists who possess decades of expertise to simplify your tasks: it offers conversions such as PDF to Word, PDF to Excel, and PDF to PowerPoint, along with functionalities like adding to PDFs, text extraction, querying PDFs, converting to various formats, and compressing PDFs. Additionally, it provides features for flattening forms, transparencies, annotations, and layers, as well as merging, splitting, encrypting, decrypting, and watermarking PDFs, along with form data management, OCR capabilities, and file uploads and zipping. Users will find extensive documentation featuring intuitive endpoints and parameters, along with sample code in .NET, JavaScript, Python, PHP, and cURL for every endpoint to facilitate smooth operation. Powered by the renowned Adobe® PDF Library™, it allows users to begin without any financial commitment and offers competitive pricing suitable for projects of any scale. The design of pdfRest emphasizes flexibility, allowing APIs to be accessed from any programming language capable of making API requests, making it a versatile choice for developers aiming to simplify their PDF workflow. Start your journey with your first API call today and experience the ease of PDF management firsthand.

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.

Enhance your applications with the versatile MuPDF SDK, which seamlessly integrates robust PDF capabilities. This compact yet swift viewer accommodates various document formats, including PDF, XPS, OpenXPS, CBZ, and ePUB. It features a renderer crafted for high-quality anti-aliased graphics, ensuring that text is displayed with precise metrics and spacing, accurate to mere fractions of a pixel. The PDF library comes equipped with a range of interactive functionalities such as annotations, form filling, digital signatures, redactions, and search capabilities. Furthermore, the command-line tools offer extensive customization options for rendering, converting documents, and manipulating PDF files, allowing for conversion to formats like HTML, SVG, and CBZ. In addition to its C library, MuPDF provides a Java library utilizing JNI, compatible with both Oracle's Java and Android platforms. Alongside the Java API, bindings for C++ and Python have also been established, showcasing its compatibility with major programming environments and operating systems. Its flexibility and optimization for various platforms make it a powerful tool for developers. The MuPDF API has found applications in a wide range of deployments, including mobile applications on both Android and iOS, SaaS and cloud solutions, document management systems, and various embedded products, highlighting its versatility and effectiveness in meeting diverse user 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 PDFix SDK provides users with the tools necessary to automatically improve the accessibility of their existing PDF files. It allows for the transformation of standard PDFs into accessible PDF/UA formats with high quality. Featuring an auto-tagging function, the SDK identifies essential elements within documents, including text, images, tables, headers and footers, headings, lists, and the reading order. By enabling batch processing, it not only conserves valuable time but also reduces remediation costs significantly. Those who have tried to extract data from multiple PDF documents are likely aware of the difficulties that can arise. The SDK employs sophisticated machine learning techniques to create an algorithm that facilitates smooth and organized data extraction. Consequently, users can effortlessly recognize different logical components, such as text, headings, images, tables, headers and footers, and lists. Moreover, it provides the capability to scrape data from PDFs and convert it into preferred formats like HTML, CSV, JSON, or XML, enhancing both efficiency and user experience. This feature proves especially advantageous for organizations focused on enhancing document accessibility while simplifying their data management processes. Ultimately, the PDFix SDK stands as a robust solution for those seeking to elevate the accessibility and usability of their PDF documents.

Incorporate the Kdan PDF SDK library into your applications to unlock a wide array of sophisticated features for viewing, editing, signing, annotating, and much more, across mobile, desktop, and web platforms. This SDK enriches your application with a full suite of professional PDF capabilities specifically designed for smartphones and tablets. We offer various flexible kit options, enabling developers to start with our demo version and select a plan that aligns perfectly with their needs. With ten years of innovation and expertise, Kdan's PDF viewer engine has been fine-tuned for peak performance. To ensure your applications remain stable, we provide regular updates. The integration process is seamless, supported by our detailed SDK documentation that allows developers to focus on crafting the app's design. In addition, developers can create unique user experiences by utilizing fully customizable UI source code or opting for the pre-built UI elements for rapid deployment. Regardless of the platform you choose, our PDF SDK enables developers to build powerful applications that can efficiently view, edit, and annotate PDF documents, significantly enhancing user experience. By leveraging these advanced capabilities, your applications are positioned to excel in a competitive landscape while meeting diverse user needs. This adaptability not only fosters user engagement but also encourages long-term loyalty to your applications.

GdPicture.NET PDFSDK offers a user-friendly API that enables developers to build highly customizable applications across various software environments. With this SDK, you can integrate a feature-rich viewer that works seamlessly on all platforms, efficiently rendering complex documents while ensuring full Unicode support. It supports all versions of PDF and PDF/A, along with over 100 different document, office, and image formats. You have the capability to incorporate functionalities such as thumbnails, annotations, and digital signatures. In addition, it provides essential features for redaction, encryption, and text search, among others. GdPicture.NET PDFSDK empowers you to produce compliant, organized, and secure PDF documents, including the latest PDF 2.0 standards. Furthermore, you can create accessible PDFs through its PDF/UA generation capabilities, which cater to users with disabilities. For long-term archiving, you can ensure that your PDFs meet PDF/A compliance, while also having the option to generate web-optimized PDF files using linearization techniques. Additionally, you can enhance your documents by adding layers and transparency to various content elements, enriching the overall user experience. This versatility makes GdPicture.NET PDFSDK an essential tool for developers seeking to elevate their software solutions.

FormVu offers a comprehensive solution for transforming HTML, JavaScript, and CSS content compatible with popular browsers like Chrome, Edge, Firefox, and Safari across various operating systems, including Linux, MacOS, and Windows, as well as mobile devices running Android or iOS. The converted PDF forms seamlessly display in the browser, mirroring their original appearance in Acrobat with accurate layouts, formatting, and styles. Fonts embedded within the documents are appropriately converted, ensuring a consistent visual experience. Supporting both AcroForms and XFA Forms, FormVu effectively transforms all forms into HTML5, CSS, and JavaScript while maintaining their original style and layout. It also converts JavaScript to function within the browser context, safeguarding validation and calculations present in the forms, and even accommodates XFA FormCalc. Designed for user-friendliness, the FormVu converter eliminates the need for a dedicated server or complex infrastructure, generating clean, standalone HTML content. Furthermore, it integrates smoothly into existing PDF workflows, allowing users to edit, update, and save data back to the original PDF or forward it to the server, enhancing overall efficiency in document management. This capability makes FormVu a versatile tool for anyone looking to streamline their PDF form processes.

Effortlessly generate and manage PDF files by leveraging features such as splitting, appending, stamping, encrypting, extracting, and filling. PDFKit.NET serves as a comprehensive .NET class library tailored for the creation and modification of PDF documents, conveniently packaged as a single assembly that allows for simple xcopy deployment. It functions autonomously, requiring nothing more than the .NET framework. Central to PDFKit.NET is an intuitive and organized object model that includes various classes, such as document, page collection, page, canvas, shape, bookmark, annotation, and field. The development team's main objective is to streamline the integration of this class library into larger software solutions. With the introduction of PDFKit.NET 5.0, users can easily fill in text fields, checkboxes, and radio buttons, while choosing to save forms in either an editable format or as a flattened PDF. Moreover, this version brings forward the capability to manage dynamic XFA documents via a new XFA processor API, significantly improving functionality. Additionally, PDFKit 5.0 allows users to extract all graphics from a page, compiling them into a diverse collection of shapes that may include text, images, and curves, thus offering flexible options for document manipulation. This makes PDFKit.NET an essential tool for developers seeking to embed powerful PDF handling features within their applications. The continual updates to PDFKit.NET ensure that it remains at the forefront of document processing technology, catering to the evolving needs of users.

The Bytescout PDF Generator SDK is a dynamic and all-encompassing resource tailored for developers of varying expertise. Its capacity for updates and modifications is detailed in the SDK updates section, making it a flexible choice. Given the complexities often involved in PDF generation, this SDK emerges as a robust solution for managing every facet of the process. With its extensive features, you can effortlessly produce comprehensive reports, enhancing your project development. The installation process is user-friendly, enabling you to jump straight into your projects without any complications. The software runs smoothly on your machine, which significantly simplifies the workflow. Bytescout products have become a preferred choice among many developers for their .NET PDF generation needs due to their reliability. For developers seeking a JavaScript-specific SDK, the JavaScript PDF generator and its subsequent updates are certainly worth investigating. If your focus lies in text extraction from PDFs, the PDF Extractor page on the official site provides valuable resources. Furthermore, PDF rendering can be particularly beneficial when transforming files into images or performing OCR tasks. Should you simply need a tool for viewing PDF documents, the C# PDF library offers an effective solution. This diverse selection of tools guarantees that developers can identify the perfect fit to meet their unique requirements, ensuring that their projects are executed with precision and efficiency. Consequently, choosing the right SDK can significantly enhance productivity and streamline development processes.

Anvil is a versatile workflow platform based on embedded logic that enables businesses to efficiently manage a large volume of PDFs, which require completion, generation, maintenance, and signing. This platform allows for a tailored approach to handle diverse PDF-related tasks seamlessly.

Our libraries deliver exceptional performance and comprehensive PDF capabilities for enterprise, mobile, and cloud applications on every platform. They support the most widely used programming languages and environments. To effectively integrate with your chosen platform, having a modern tech stack is crucial. We continuously enhance our products, introducing new features every month to keep up with technological advancements. As your project develops and your needs evolve, we will adapt alongside you. You don't need extensive PDF expertise, as our primary API is crafted to ensure a smooth developer experience across all seven platforms: Web, Windows, Android, iOS, Mac, UWP, and Linux. The team at Foxit is recognized for their ability to handle edge cases and successfully manage 100% of PDF files from every standard. By utilizing a single SDK, you can minimize reliance on multiple third-party solutions. Foxit also offers support from real developers, along with sample projects, demos, API documentation, and more for each feature of the SDK. This commitment to support ensures that you have all the resources necessary for successful implementation and development.

Seamlessly integrate sophisticated features for viewing, annotating, editing, signing, and more into your applications across mobile, desktop, or server platforms. Harness a modern technology framework that works in perfect harmony with your existing systems. As your requirements change and projects progress, we evolve alongside you, ensuring a smooth experience even with complex PDF files through the use of a powerful and efficient rendering engine. Enjoy rapid search functions that deliver results almost instantly, enhancing user satisfaction. Enrich your PDFs with options for highlights, stamps, comments, drawings, and custom annotations, each type providing distinct styling choices. Facilitate a paperless workflow with electronic and digital signatures that guarantee secure document signing processes. Validate and certify certificate-based documents while automatically detecting the font and size of the original text. Additionally, easily adjust PDF content by updating text and images as needed to keep your documents relevant and up-to-date. This all-encompassing PDF solution not only addresses your present needs but also anticipates future demands, ensuring ongoing flexibility and usability. In this way, you can stay ahead of the curve and maintain a competitive edge.

SmartOffice enables users to view, edit, create, and print Microsoft Office and PDF documents directly from their mobile devices, while SmartOffice PDF specifically provides features to view, annotate, and highlight PDF files. Additionally, users can convert Office documents into PDFs, saving them to their mobile devices or cloud accounts, and print wirelessly to thousands of compatible printers. The SmartOffice Mobile App serves as a comprehensive alternative to MS Office 365 and is available for download on both Google Play and the App Store for personal use, with options for enterprise users to integrate the app within a security platform to enhance mobile productivity. Furthermore, the SmartOffice SDK offers a variety of solutions that can be effortlessly incorporated into your enterprise's document workflow, allowing for seamless integration with your EFSS or MDM systems. This flexibility ensures that the SmartOffice mobile app can be effectively utilized within a secure enterprise environment, making it a valuable tool for businesses looking to enhance their document management processes.

PDFKit is a highly adaptable library that enables the generation of PDF documents seamlessly in both Node and browser environments, allowing for the effortless creation of complex, multi-page, printable documents. Its user-friendly API supports chainable functions and offers both low-level capabilities and higher-level abstractions, streamlining the document creation process. With just a few function calls, users can craft sophisticated documents quickly and efficiently. The library also incorporates a range of access permissions, granting options for printing, copying, modifying, annotating, filling forms, ensuring content accessibility, and assembling documents. Accessibility is a priority, as the tool supports features such as marked content, a coherent structure, Tagged PDF, and compliance with PDF/UA standards. Furthermore, PDFKit is designed to work seamlessly with JPEG and PNG images, including support for indexed PNGs and those with transparency. In addition to utilizing PDFKit, it is essential to have a destination for streaming the generated output. For projects that employ PDFKit via Browserify, installing the brfs module through npm is a necessary step for loading built-in font data into the library. The robust combination of these features positions PDFKit as an invaluable resource for anyone seeking to produce detailed and professional-quality PDF documents with remarkable efficiency, making it a top choice for developers and designers alike.

Elevate your projects by integrating advanced capabilities for editing, parsing, and rendering PDFs through an elite PDF library SDK. This adaptable multi-platform shared library, offered in formats such as dll, so, and dylib, provides a C-compatible interface that accommodates a range of programming languages like C#.Net, Python, Java 8, and C++ 11. The SDK boasts APIs tailored for various operating systems, including Linux, Windows, and Mac, and comes packed with a multitude of interface functions designed for creating and transforming PDF content, thus ensuring extensive customization options that cater to the specific needs of your project. It adeptly utilizes multi-core CPUs for efficient stream decoding and content rendering, while strictly adhering to the guidelines set forth by the portable document format specification. Users benefit from the ability to apply electronic signatures, with the flexibility to add or omit a cryptographic security layer based on their preferences. Furthermore, the SDK offers robust capabilities for PDF encryption and decryption, featuring a password-based encryption handler, as well as a comprehensive suite of tools for manipulating document structure—this includes creating, deleting, moving, inserting, extracting, resizing, and rotating pages. With these extensive features, this SDK ensures thorough management of all PDF-related tasks, establishing itself as an essential tool for developers looking to enhance their applications with superior PDF functionality. As a result, it empowers developers to create tailored solutions that meet diverse project demands while optimizing performance and security.

LEADTOOLS libraries provide developers with a powerful PDF API that enables reliable and multi-threaded operations with minimal coding, removing the need for external tools like Acrobat. With a wide array of PDF controls, users can efficiently read, write, convert, and display PDF documents while seamlessly integrating advanced features such as OCR, ICR, OMR, forms recognition, virtual printing, and scanning APIs to create all-encompassing PDF solutions. The document viewer API framework allows for the effortless loading and viewing of any PDF file, making it user-friendly. Thoroughly validated against a vast number of PDF files, the LEADTOOLS PDF SDK guarantees outstanding viewing accuracy and performance that often exceeds that of many leading PDF readers available today. By effectively addressing the common inconsistencies and challenges posed by various PDF file versions, LEADTOOLS empowers developers to approach their projects with confidence, significantly cutting down on testing time and facilitating the rapid development of high-quality PDF applications. Moreover, this streamlined efficiency not only accelerates the development cycle but also greatly improves user satisfaction with the end products, leading to a more successful overall experience.

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.

This toolkit for processing and cleaning documents and images empowers developers to seamlessly incorporate various document handling features, such as image editing, compression, and enhancement, into their software. With ImageGear, applications can efficiently perform tasks like deskewing and removing lines and speckles from files, ensuring that images are clear and professional. The advanced color-processing capabilities of ImageGear enhance image quality while also minimizing the size of compressed files. This software development kit (SDK) offers a wealth of APIs designed for thorough image processing and cleanup, making it easier than ever to enhance application functionality. Additionally, ImageGear is instrumental in fulfilling all aspects of the document lifecycle, allowing .NET developers to integrate strong PDF features into their applications. Users can not only view and annotate PDF pages but also compress them to improve efficiency. Explore the extensive PDF manipulation features provided by ImageGear to elevate the performance and functionality of your applications even further.