List of the Top 9 PDF APIs 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.

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.

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.

This modern cloud infrastructure offers an array of freemium microservices and solutions tailored for productivity across different sectors, featuring compression and unified APIs that function effortlessly on any platform, client, or programming language, supplemented by an innovative SaaS licensing model. Extensive guides and detailed documentation provide insights into essential processes such as authentication, API communication, document processing, and error management, while also emphasizing best practices for achieving peak efficiency. A straightforward and intuitive ASP.NET Core MVC application exemplifies the integration of DocuVieware through the PassportPDF Rest API for document visualization purposes. This application is intended to grow over time, with plans to introduce additional similar demonstrations in the future. Additionally, a simplified ASP.NET 4.6.2 application further illustrates how to utilize DocuVieware via the PassportPDF Rest API, showcasing the flexibility and adaptability of these tools across various development platforms. Users can expect continuous updates and improvements, ensuring that they have access to the latest features and enhancements.

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.