Best PDF SDK in the UK
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Compare the Top PDF SDK in the UK as of October 2025
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What is PDF SDK in the UK?
PDF SDKs (Software Development Kits) provide developers with the tools and libraries needed to integrate PDF functionality into their applications or websites. These SDKs offer features like viewing, editing, creating, converting, and annotating PDFs, allowing developers to build custom PDF solutions tailored to their needs. PDF SDKs often include APIs for manipulating text, images, and form data, as well as for handling document security, such as encryption and password protection. By using PDF SDKs, developers can add robust PDF capabilities to their software without having to build these features from scratch, saving time and resources. Compare and read user reviews of the best PDF SDK in the UK currently available using the table below. This list is updated regularly.
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1
Apryse PDF SDK
Apryse
Apryse (formerly PDFTron) powers the future of document technology. We help businesses, developers, and enterprises handle documents with unmatched speed, accuracy, and security. Whether running in secure server environments or delivering seamless web-based experiences, Apryse makes document workflows smarter and easier. With Apryse, you can: Embed powerful document features directly into your apps — from viewing and editing to collaboration and compliance. Run at enterprise scale on secure server infrastructure, ensuring reliability without cloud dependencies. Deliver seamless in-browser document experiences with responsive, accessible, and feature-rich web capabilities. Trusted globally, Apryse empowers organizations to simplify operations, enhance productivity, and create exceptional document experiences. -
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Nutrient SDK
Nutrient
Nutrient is the comprehensive solution for all your PDF needs, offering tools that effortlessly integrate and operate PDF functionality across any platform. 1. SDK PRODUCTS Integrate robust PDF functionality into iOS, Android, Windows, web (JavaScript), or any cross-platform technology, providing capabilities such as PDF viewing, markup, collaboration, and more. 2. LIBRARIES Utilize our potent .NET and Java libraries to boost your backend applications with batch processing of redactions and PDF forms, OCR’d scanned text, and editing of PDF documents, directly from your application server. 3. PROCESSOR Our dynamic PDF microservice, Processor, enables swift generation of PDFs from HTML, including HTML forms, along with Office-to-PDF conversions, OCR, redaction, and XFDF merging and exporting. 4. PDF API Use hosted PDF API to generate, convert, and modify PDF documents in your workflows. We manage the development and server administration, letting you focus on what you do best.">
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Adobe PDF Library SDK
Datalogics Inc.
Developers rely on Datalogics to provide the most comprehensive PDF SDKs in the industry. We are SOC 2 Type 2 certified. Global OEMs, SaaS and enterprise end-users rely on Adobe PDF Library to automate the creation, editing and management of PDFs. An Adobe partner, our SDK uses the same source code as Acrobat for stability, reliability and quality results. Flexible programming language and platform options include .NET, .NET Framework, Java and C/C++ on Windows, Linux, MacOS; NuGet & Maven; pdfRest API Toolkit Container option. Our extensive documentation includes getting started guides, API references, and hundreds of sample code examples on GitHub to help developers precisely create and define PDF workflow solutions. Free trial with proof of concept support, join us on Discord or use our AI assistant for help, or set up a time to talk to one of our engineers about your project. Our expertise and support is the reason we have a 91% customer retention rate.Starting Price: $5,999 -
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Pdftools
PDF Tools
Whether you have thousands of documents or millions, Pdftools has the products and services to help make processing a breeze. Designed for document-heavy industries, Pdftools’ suite of SDKs and APIs are here to make your document workflows easier, faster, and stress-free. Built on SDKs and APIs, the Pdftools products integrate seamlessly into your existing (or new) systems and applications. Process thousands of documents every minute. Our tools are precision-engineered to be efficient and run at blazing speeds. We’re engineers at heart, so we’re only satisfied with the most reliable, orderly, and usable, and well-documented platforms. Shrink file sizes down, but keep the quality and interactivity. Your documents will always be compliant for long-term archiving. We’ve obsessed over every detail in our products, and documented everything so it’s easy to get started.">
Starting Price: $0/month/user -
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PrizmDoc
Accusoft
Through a collection of UI components and content manipulation APIs, PrizmDoc provides customizable document processing to help developers deliver in-browser document creation, editing, and collaboration functionality, to enhance their software applications. Our functionality integrates on the client and server side smoothly, creating a seamless experience for both you and your users. Render and display dozens of file types, from Adobe PDFs and Microsoft Office files to CAD and DICOM formats, in a browser without the need to download or open native applications. Designed for seamless integration with your application, our zero footprint HTML5 viewer is fully customizable, from quick integrations with minimal configuration to complete programmatic control using our extensive JavaScript API. -
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CAD6engine
Malz++Kassner GmbH
Use CAD6engine as your programming library (SDK) to output technical and financial data, raster images, process and text information, SVG graphics, or the content of DWG and DXF files to high-quality PDF files (of course without using the limited Windows printer interface or GDI). Create high-resolution PDFs with Unicode texts, layers, transparencies, and support for various colors models (RGB/HSB, CMYK, gray, CIELab). Convert SVG to DXF/DWG files and vice versa. Combine various graphical files into one document, add objects and text, and print it. With full control over all parameters. Integrated into your program, running completely in the background, or optionally presenting a full-fledged graphical user interface. CAD6engine is addressed to C++ developers with basic knowledge of C++ and Win32/x64 topics. CAD6engine may also be used with other compilers that support the supplied C++ compatible dynamic link library MKCAD6engine.dll and the corresponding MKCAD6engine.lib.Starting Price: 195 EUR per 10 users -
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PDF Automation Server
Qoppa
PDF Automation Server – PDF Processing Server PDF Automation Server is a modular server product that provides a rich set of PDF processing functions for different environments. Use PAS as an essential tool to streamline your PDF processing, document workflows and web service orchestration in your organization. REST API Module Use REST API calls to easily integrate into your existing document workflows HTML5 PDF Module Convert documents and serve end-users PDF files directly in the browser Workflow Module Automate the receiving, processing & routing of documents with the PAS Workflow Module Robust REST API PDF Automation Server provides a complete set of PDF processing and conversion functions in a robust REST server environment that can easily integrate into your existing document workflows and work with 3rd party integration and orchestration products. HTML PDF Markup Module PDF Automation Server provides a module to enable markup of PDF documents in the browser.Starting Price: $2,400 -
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ComPDFKit PDF SDK
PDF Technologies, Inc.
ComPDFKit PDF SDK offers a top-quality PDF SDK and PDF API for developers or companies. It allows them to integrate PDF editing, annotating, converting, form filling, digital signing, comparing, measuring, and redacting into any device. Product Details of ComPDF: - ComPDFKit PDF SDK Our PDF SDK renders PDFs at the fastest speed and provides rich and reliable functionalities including viewing, markup, content & page editing, digital & electronic signing, form filling, OCR, comparing, measuring, etc., satisfying the needs of processing PDFs in different scenarios. - ComPDFKit Conversion SDK Support Convert PDF to or from Word, Excel, PPT, TXT, RTF, PNG, JPG, HTML, JSON, markdown, searchable PDF, etc. - ComIDP ComIDP is the intelligent document processing, allow companies to integrate for unstructured data extracting, knowledge base building, AI Q&A, image pre-processing, PDF parsing, PDF data extraction, PDF table extraction, etc. -
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KDAN PDF
Kdan Mobile Software
KDAN PDF (formerly PDF Reader) is your all-in-one PDF solution. Edit, sign, OCR scan, convert, annotate, and fill forms in PDF documents. With innovative AI features, speed up your document workflow! Designed for Mac, iPhone, and iPad, KDAN PDF is trusted by millions for its comprehensive features and efficiency. AI FEATURES: • Analyze and extract key information or tables from a PDF, then convert the data into spreadsheets for further analysis or visualization. • Chat with PDF and get document analysis, advice, new ideas, or content summary • Text redaction - automatically identify and block sensitive information in a documentStarting Price: $59.99/year (billed annually) -
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ByteScout PDF Suite
ByteScout
Fast to market engine to setup reading of unstructured PDF, images, scanned documents using powerful and easy to use extraction templates editor. Create templates in a visual editor with no programming or coding required. Supports fields, tables, pdf forms, multi-paged tables, unstructured tables. Use OCR engine with multi-language OCR support, re-use built-in AI-powered templates. Extract text, tables, images, attachments and other data from PDF, Reads Tables to CSV, Gets text from Images, Extracts Attachments, supports OCR with one or more languages. Handle noisy images and damaged texts transparently with the built-in OCR filters. Convert to common data structures like TXT, JSON, XLS, XLSX, CSV or XML. AI powered tables and document analysis functions.Starting Price: $10 per user per year -
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novaPDF
Softland
Using novaPDF Pro you can easily create high quality searchable PDF files in an affordable and reliable way from any Windows application. It installs as a printer driver and helps you generate the PDF files by simply selecting the "print" command from any application (you can convert Word documents, Excel sheets, PowerPoint presentations, AutoCad drawings, emails or web pages). You can password protect the PDF files you create and permissions can be restricted to prevent the document from being viewed, printed, modified, copied or annotated. Your PDF files will be secured with 40-bit and 128-bit encryption algorithms. Features include: customizable resolution, PDF security, PDF links, PDF bookmarks, text/image compression, profiles and more. novaPDF also includes a PDF SDK for developers that want to integrate PDF creation capabilities in their software.Starting Price: $19.99 (one time payment) -
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PDF Conversion SDK
Visual Integrity Technologies
Add PDF Features with 2 API Calls Open, Edit, and View PDF. All that's needed is two API calls and a configuration file. Within a day, you can add, open, import, edit and view PDF features in your app. When formats don't match one-to-one, the SDK neutralizes the differences. This includes adding cropping, fills, color management and fonts. The PDF Conversion SDK processes all PDF versions including ISO Standard PDF 2.0. Any PDF from file or print-ready memory is valid input. Conversions flow straight through without intermediate steps or compromised quality. No printer driver. The PDF Conversion SDK runs on Windows, MacOS and Linux. It supports .NET. Example code included. Removes redundant information & compresses data. This ensures great performance for fast web and application viewing. Search for objects and text strings. Convert PDF to your native file format. Change the contents of a PDF page. Extract images from PDF. Retrieve metadata from PDF (layers, geospecification, etc).Starting Price: $199 per year -
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PDF Xpansion SDK
soft Xpansion GmbH & Co. KG
The PDF Xpansion SDK 17 provides features, methods and functionality that let software developers create PDF and PDF/A enabled applications and software solutions. It offers a wide range of options for creating and editing PDF, PDF/A and XPS documents, for displaying and printing them on paper, for conversions between these formats, exporting and/or importing from/to other file formats. Moreover, PDF Xpansion SDK 17 comes with eInvoicing functionality for the formats ZUGFeRD, Factur-X and XRechnung. It enables software developers to integrate EU-compliant electronic invoicing functionality (creation, display and reading of electronic invoices) according to EU standard 16931 in applications. The SDK is made to integrate those functions into both Windows desktop applications for the PC and for Windows Apps. The pricing model is very flexible, since it allows a modularized purchase of separate functionality, so that only those features have to be paid for that are really needed.Starting Price: €500 (one-time & royalty free) -
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Anvil
Anvil
Anvil provides companies who require a high volume of PDFs to be filled, generated, maintained, and/or signed a customizable, embedded, logic-based workflow platform.Starting Price: $0 per month -
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GDPicture Document Processing SDKs
GdPicture.NET
The only Document Processing SDKs with 3000+ features. GdPicture is altogether a PDF, OCR, barcode, document imaging, and formats SDK with more than 3,000 functionalities, for any software development. Five-in-One Toolkit! Unlike most SDK companies that sell separate toolkits, GdPicture delivers an all-in-one SDK without extra costs or complex licensing. Offers advanced set of APIs with leading-edge technologies like artificial intelligence, machine learning, fuzzy logic algorithms, etc. for any of your development projects. With ~15 years of continuous research and a focus on innovation, our SDKs have become the most comprehensive solution in the market. -
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PDFKit.NET 5.0
TallComponents
Create and manipulate PDF documents. Split, append, stamp, encrypt, extract, fill, and more. PDFKit.NET is a 100% managed (verifiable) .NET class library for creating and manipulating PDF documents. It consists of just a single assembly that can be xcopy-deployed. It has no dependencies other than the .NET framework. Central to PDFKit.NET is a consistent and highly intuitive object model consisting of classes like document, page collection, page, canvas, shape, bookmark, annotation, field, etc. The focus of the development team is always to ease the task of integrating our class library into a larger application. Fill text fields, checkboxes, radio buttons, etc., and save the form either editable or flattened with the PDFKit.NET 5.0. With PDFKit.NET 5.0 you can populate and consume dynamic XFA documents with the new XFA processor API. Extract all graphics on a page as a collection of shapes with PDFKit 5.0. Shapes can be text, images, and curves.Starting Price: $990 per year -
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pdfToolbox
callas software GmbH
pdfToolbox offers powerful, dynamic, and easy-to-integrate PDF processing, from quick visual inspection and fixing to fully unattended processing of thousands of files. Using rock-solid Adobe technology pdfToolbox provides checking and fixing of even very complex problems, color management, impositioning, conversion to and from PDF, and more. pdfToolbox technology is used by small companies, large publishers, and print providers as well as OEMs that integrate the technology in their own solutions. pdfToolbox Desktop is a manual PDF preflight and correction application, available as a plug-in in Adobe Acrobat Pro or as a standalone application. pdfToolbox offers prepress operators an easy-to-use interface for all pre-press actions, which gets you to each action you might need in three simple steps. You can easily customize this further, so you have your favorite actions at your fingertips.Starting Price: Free -
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iText
Apryse
Now part of the Apryse family, iText is one of the best-documented and most versatile PDF SDKs in the world. The open-source iText Core library features a powerful layout engine and intuitive high-level APIs for document creation and manipulation, digital signing and validation, and much more. It has built-in support for PDF 2.0, all variants of PDF/A and PDF/UA, FIPS-140-2 and the very latest ISO standards for digital signatures and encryption. You can extend iText's capabilities even further, with add-ons for comprehensive HTML/XML and CSS templating, global language and writing systems, secure document redaction, OCR, document optimization, and working with dynamic XFA. iText Core is free to use under the AGPLv3 license, while a commercial license releases you from the AGPL terms and gives you professional support and maintenance. Visit the iText website to try the entire iText Suite free for 30 days, while keeping your IP safe under iText's commercial license terms. -
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Foxit PDF SDK
Foxit Software
Our high-performance libraries add robust PDF functionality to enterprise, mobile, and cloud applications across all platforms: Web, Windows, Android, iOS, Mac, UWP and Linux, using the most popular developer languages and environments. Build on a modern tech stack that integrates tightly with the platform you’re working on. We continuously improve our products and they gain new features every month. We grow with you as your requirements change and your project evolves. Our core API is designed from the ground up to deliver a seamless development experience across all platforms, without requiring deep PDF knowledge. Foxit is known for our management of edge cases, and for working with 100% of PDF files across all standards. With only one SDK to work with, you dramatically reduce your exposure to third parties. We provide sample, projects, demos, API docs and more for every single feature in the PDF SDK to get you up to speed quickly. You will receive support by real developers. -
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Aquaforest SDK
Aquaforest
Aquaforest SDK is a powerful toolset for processing PDFs including PDF content extraction, searchable PDF creation, OCR with standard (Aquaforest) engine, OCR with extended (Canon IRIS) engine, and handwriting OCR options via Google and Microsoft APIs. Advanced PDF and barcode toolkit, high performance with support for up to 64 cores. The SDK is able to analyze PDF documents and automatically extract name/value pairs. The SDK has a wide variety of PDF manipulation capabilities including PDF merging, PDF attachment processing, PDF content extraction, XMP metadata processing, PDF/A validation, and more. The standard OCR engine supports 23 languages and is included in every edition of the SDK. This provides an interface to Google and Microsoft’s cloud OCR services which can be especially useful for special cases such as handwriting recognition. The SDK is able to read and recognize most standard barcode types. -
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PDF Viewer SDK ActiveX
Viscom Software
It is PDF Viewer SDK, fast open PDF, support Autofill PDF form fields and print a PDF, export text to text file, xml file, html file and searching the text with C++ , C#, VB.Net , VB6, Delphi, Vfp, MS Access. -
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Investintech PDF Library SDK
Investintech PDF Solutions
Seamlessly integrate robust PDF editing, parsing and rendering functionalities into your projects with PDF library SDK. Multi-platform shared library (dll, so and dylib) with C-compatible interface. C#.Net, Python, Java 8, C++ 11, libraries/modules. APIs for Linux, Windows, and Mac. Numerous interface functions for transforming and creating new content for PDF files, providing a huge variety of options and broad flexibility for implementation tailored to the specific needs of your project. Efficient utilization of multi-core CPUs for stream decoding and content rendering purposes achieved by closely following portable document format specification guidelines. Apply electronic signatures (with or without cryptographic security layer). PDF encryption & decryption (a password-based encryption handler). Document structure manipulation (create, delete, move, insert, extract, resize, and rotate pages). -
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LEADTOOLS PDF SDK
LEADTOOLS
With just a few lines of code, LEADTOOLS libraries empower developers with a comprehensive PDF API to implement reliable and multi-threaded PDF functionality, without the need for third-party dependencies like Acrobat. Robust PDF controls to read, write, convert, and view PDF files can be combined with state-of-the-art OCR, ICR, OMR, forms recognition, virtual printing, and scanning APIs within LEADTOOLS to create complete solutions that utilize the PDF format. Load and view any PDF file using the document viewer API framework. Tested against thousands of PDF documents, LEADTOOLS PDF SDK libraries provide impeccable viewing accuracy and speed that tops many market-leading PDF reading applications. LEADTOOLS accounts for common errors and differences between PDF file versions to give programmers peace of mind, minimize their testing phase, and create the best PDF applications faster. -
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ImageGear
Accusoft
This document and image clean up and processing toolkit allows developers to quickly integrate document handling functions like image conversion, creation, editing, manipulation, compression, and image enhancement to their applications. ImageGear gives your application the ability to clean up files including deskew, line and speckle removal, and more. In addition, ImageGear’s color processing tools allow you to enhance image quality resulting in a reduction in compressed file sizes. This document and image processing SDK includes a variety of APIs that enable image clean up and processing. Add functionality to your applications, learn how you can meet all your document lifecycle needs with ImageGear. This PDF SDK allows .NET developers to add robust PDF functionality to an application. Users can view, convert, annotate, compress, redact, insert, remove, or reorder pages. Learn about all of the PDF manipulation capabilities and discover how ImageGear PDF can enhance your application. -
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Image Viewer CP Pro SDK ActiveX
Viscom Software
It is a PDF Viewer and Document Viewer SDK, Export to PDF, Support Autofill PDF form fields ,Saves filled forms to new PDF file. Image processing, 1D and 2D Barcode Reader, Writer, DICOM and OCR with C#, C++, VB.NET, VB, Delphi, Vfp, MS Access. -
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jPDFViewer
Qoppa Software
Integrate a PDF reader right into your Java application or website. jPDFViewer is a self contained Java component that can be deployed in a Java application or a web application (in a web page as an applet, or a Java webstart application). Since it is written in Java, it allows your application to remain platform independent and run on Windows, Mac, Linux and Unix. jPDFViewer can load documents from files on a local or network drive, from a URL and from Java input streams for documents that are generated runtime or come from other sources, such as a database. Main Features: Read and display PDF files on any platform that supports Java Print PDF files Fill interactive PDF forms View all markup annotations Validates and displays digital signatures Text search and selection Advanced tools: zoom, loupe, snapshot, pan and zoom Easy navigation with different views: thumbnails, bookmarks, annotations... Customizable toolbar and user interface Support for all image typesStarting Price: $2,000 -
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Vanilla.PDF
Vanilla.PDF Labs
Vanilla.PDF is a powerful, modern, and open-source PDF processing toolkit designed to provide maximum flexibility while remaining easy to use. Whether you are building a small script or an enterprise-level application, Vanilla.PDF offers all the tools you need to create, modify, sign, and analyze PDF files with precision and efficiency. Our framework supports the entire range of PDF standards, including PDF 2.0 and archival formats such as PDF/A, as well as advanced PAdES electronic signatures with full PKCS#11 hardware token and smart card integration. This ensures compliance with the highest industry and legal standards for document authenticity and integrity. Vanilla.PDF is built with developers in mind — it offers a clean, well-documented API, accompanied by fully-featured examples that showcase practical real-world usage. This means you can integrate it into your projects quickly and reliably, with confidence that the results will meet the market’s highest expectations. -
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jPDFProcess
Qoppa Software
jPDFProcess is a Java library to create and manipulate with PDF documents that can be used to deliver customized PDF content to your users or to process incoming PDF content. The library has a simple interface to work with PDF documents and is designed to be integrated easily and seamlessly into your PDF document workflow. jPDFProcess provides the functionality found in many of our other libraries, including printing, setting permissions and security, creating and assembling documents, digital signing, working with form fields, converting to images, extracting text and more. The library can work with PDF documents from files, URLs and input streams and can save documents to files and output streams, so it can serve documents from a J2EE application directly to a client browser without any temporary files. jPDFProcess is built on top of Qoppa’s proprietary PDF technology so no external PDF Software is required. -
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jOfficeConvert
Qoppa Software
Convert Microsoft Word documents and Excel spreadsheets to PDF directly from your Java applications, without user intervention and without the need for any other software. jOfficeConvert is a Java library that can read and render MS Word and Excel documents natively to convert to PDF, to convert to images, or to print the documents automatically. The library is 100% Java so it can run on any platform that supports Java, including Windows, Linux, Unix (AIX, Solaris Spark, Solaris Intel, HP-UX) and Mac OSX. The library does not use any third party software or native calls, it can be run in a server environment or integrated into a desktop application. Main Features Convert Word documents (.doc, .docx) to PDF Convert Excel documents (.xlsx) to PDF Convert Word, Excel to HTML5 (when combined with jPDFWeb) Merge multiple Word, Excel files into a single PDF document Set permissions and passwords on resulting PDF documents.
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