List of the Top 16 PDF SDK for iPhone 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.

KDAN PDF Reader serves as a comprehensive PDF management solution, allowing users to edit, sign, perform OCR scans, convert, annotate, and fill out forms within PDF documents seamlessly. By incorporating advanced AI capabilities, it enhances the efficiency of your document workflows! Tailored for Mac, iPhone, and iPad users, KDAN PDF Reader is a reliable choice for millions, thanks to its extensive features and user-friendly design. KEY FEATURES EDIT TEXT & PDF • Correct mistakes and typos directly in the PDF - replace, insert, or remove text in documents • Modify images by adding, editing, cropping, and adjusting them within PDFs • Include headers and footers for better organization • Utilize Bates numbering for effective referencing, tracking, and systematic arrangement • Apply stamps or dynamic stamps to convey status, offer feedback, and emphasize key information in the document CONVERT PDF • Offline file conversion - change files without needing an internet connection • Transform PDFs into Office file formats, images, or ePub • Supported formats include docx, xlsx, csv, pptx, rtf, txt, html, jpg, png, BMP, jpg200, pub, and MOBI SIGN & FORMS • Fill out and modify forms as needed • Design fillable forms complete with buttons, checkboxes, and list boxes • Create and apply signatures directly on PDFs • Generate signatures using a trackpad, keyboard, or images EDIT PAGE • Combine and separate PDFs effortlessly • Extract, rearrange, rotate, remove, and crop individual PDF pages • Modify the background color of PDFs for enhanced visibility • Add pages from other documents for comprehensive project management. This makes KDAN PDF Reader not just a tool, but a complete solution for all your PDF 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.

AmindPDF boasts a highly intuitive user interface that simplifies PDF management for users. It has the capability to identify and extract text from PDFs, allowing for direct editing of paragraphs or entire blocks of text in a seamless manner, akin to the experience in MS Word. For enhancing PDF security, users can easily apply passwords, define document permissions, insert signatures, and add watermarks. Additionally, the software supports batch processing, enabling users to execute multiple operations, including merging, splitting, compressing, numbering, and converting various PDF files simultaneously. AmindPDF is compatible with multiple platforms such as Windows, iOS, and Android, ensuring that users can access its features on both computers and mobile devices, thus facilitating PDF editing or processing at any time and place. Users can effortlessly modify PDF text by adjusting attributes like font, size, color, style, and alignment. They can also manage images within PDFs by selecting, replacing, rotating, cropping, or deleting them as needed. Furthermore, AmindPDF allows the merging of multiple PDF or image files into a single PDF, employing the filenames of the combined documents to create a structured outline within the final merged file, enhancing organization and accessibility. This versatility makes AmindPDF an invaluable tool for anyone needing comprehensive PDF solutions.

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.

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.

PDFlib GmbH is wholly committed to the evolution of PDF technology, with its products being utilized by customers since 1997. The company played a pivotal role as a founding member of the PDF Association in 2006, which was previously known as the PDF/A Competence Center. This organization actively monitors industry changes and market trends, ensuring compliance with ISO standards for PDF. PDFlib GmbH's products are accessible globally, boasting a substantial presence in Europe, North America, and Japan. Recognized for its development components, PDFlib excels in the creation and manipulation of PDF documents. Its main goals include the dynamic production of PDFs on web servers and through various applications on servers, desktops, and mobile devices. By employing PDFlib, users can generate PDF documents dynamically from databases, similar to how dynamic web pages are created. Since its establishment in 1997, PDFlib has showcased its adaptability across a wide array of use cases and development environments. Application developers utilize PDFlib to create PDF outputs that encompass text, images, graphics, and interactive elements, solidifying its status as an indispensable tool in contemporary document generation. Furthermore, PDFlib's comprehensive features make it a preferred choice among developers in search of efficient PDF solutions, reinforcing its reputation in the industry.

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.

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.

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.