Best PDF SDK for Windows of 2025

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

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

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. Languages: .NET, .NET Framework, Java and C/C++ Platforms: Windows, Linux & MacOS Package managers: NuGet & Maven Capabilities include but are not limited to: -Annotations -Content creation -Content modification -Color management -Extraction - text, images, forms -Compression/optimize -Conversion - PDF/A, PDF/X, EPS, PostScript, XPS, ZUGFeRD, color -Display, Printing -Extract text, images & other content -Forms - Import, export, flatten static & dynamic XFA forms, AcroForms -Images - extract, import/export, thumbnails, render/rasterize pages, separations -Optimization - size, content, images, etc. -OCR - add text to document, add text to image -PDF to Office Documents (Word, Excel, PPT) -Security - Viewer settings, redactions, password, encrypt/decryption, watermark Pricing options for OEMs, SaaS & end-users are flexible and based on usage. Shorten development times & get to market faster with Adobe PDF Library. Free trial - download today.

jPDFOptimizer, a Java library that optimizes and reduces the size of PDF documents, is available. jPDFOptimizer removes unnecessary objects from PDF documents, detects and merges duplicate images and fonts, as well as altering image resolution, compression, and color spaces to reduce their size. The library offers a simple, but powerful API that allows the calling application to fine tune how to optimize documents. jPDFOptimizer uses Qoppa Software's extensive PDF technology. It does not require any third-party software or drivers. The library is 100% Java, and can be used on any operating system that has a standard Java implementation such as Windows, Linux and Solaris. Features -Modify image resolution, color space and compression -Compress images with JPEG 2000, JPEG 2000, and JBIG2 -Compress data streams -Remove any unused items -Remove duplicate images and fonts and merge them -Flexible optimization options Linearize PDFs for quick web view Support for the latest PDF format Support for JDK 1.6+

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

Pdftools can help you process thousands of documents, or even millions. The suite of SDKs from Pdftools is designed for industries that are document-intensive. They will make your document workflows faster, easier, and less stressful. The Pdftools products are built on SDKs or APIs. They integrate seamlessly with your existing systems and applications. Process thousands of documents per minute. Our tools are designed to be fast and efficient. We are engineers at heart and only accept the most reliable, usable and well documented platforms. File sizes can be reduced, but quality and interactivity are not compromised. Your documents will be compliant with long-term archiving. We have documented every detail of our products so that you can easily get started.

CAD6engine is a comprehensive SDK library for developers that outputs technical and financial data, raster images, text, SVG graphics, and DWG/DXF file content into premium-quality PDF documents. Unlike traditional methods, it avoids using the limited Windows printer interface or GDI, delivering high-resolution PDFs with Unicode text support, layers, transparency effects, and multiple color models such as RGB, CMYK, HSB, gray, and CIELab. The engine supports bi-directional conversion between SVG and DWG/DXF file formats and enables the combination of multiple graphical files into one PDF document with customizable objects and text. CAD6engine offers full control over all output parameters, ensuring precise and customizable results. It can be fully integrated into applications, running quietly in the background or optionally displaying a complete graphical user interface for user interaction. The SDK is compatible with C++ compilers that support its dynamic link library (MKCAD6engine.dll) and library file (MKCAD6engine.lib). Designed for C++ developers with basic Win32/x64 knowledge, it supports various development environments and compiler toolchains. CAD6engine is ideal for applications requiring professional PDF generation from CAD and graphic sources.

You can convert Microsoft Word documents and Excel spreadsheets directly from Java applications without any user intervention. jOfficeConvert is a Java library which can read and convert MS Word and Excel documents natively. It can also convert to images or print the documents automatically. The library is 100% Java and can be used on any platform that supports Java (Windows, Linux, Unix, Solaris Sparks, Solaris Intel. HP-UX). The library doesn't use any third-party software or native calls. It can be run in a server environment, or integrated into a desktop program. Main Features Convert Word documents to PDF (.doc,.docx) Convert Excel documents to PDF (when combined with JPDFWeb) Merge multiple Word and Excel files into one PDF document. Set permissions and passwords for the resulting PDF documents.

jPDFPreflight, a Java library, is used to verify PDF compliance to different standards including PDF/UA and PDF/A, and to convert documents to these standards. jPDFPreflight allows you to check compliance with these profiles: -PDF/UA Verification -PDF/A-1b Verification -PDF/A-2b Verification -PDF/A-2u Verification -PDF/A-3b Verification -PDF/X-1a:2001 Verification -PDF/X-1a:2003 Verification -PDF/X-3:2002 Verification -PDF/X-3:2003 Verification (including ZUGFeRD) jPDFPreflight converts PDF documents to comply with the following profiles. Convert PDF to PDF/A-1b Convert PDF to PDF/A-2b Convert PDF to PDF/A-3b Features Verify compliance with PDF documents following several standards Convert documents to PDF/A compliant -Produced detailed report of all items that are not compliant Add annotations to documents to highlight items that are not in compliance -Works with Windows, Linux, Unix, and Mac OS X (100% Java).

KDAN 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 Reader is trusted by millions for its comprehensive features and efficiency. **Spring Sale: Work smarter with KDAN PDF Reader—get 40% OFF Document 365 AI+, our AI-powered, cross-platform subscription. Offer ends May 8. KEY FEATURES EDIT TEXT & PDF • Fix errors and typos directly in PDF - replace, add, or delete text in PDFs • Add, edit, crop, and adjust images in PDFs • Add header & footer • Add Bates numbering for easy reference, tracking, and organization • Use stamps or dynamic stamps to indicate status, provide feedback, and highlight information in a document CONVERT PDF • Offline file converter - convert file without an internet connection • Convert PDF to Office file formats, image, or ePub • Format supported- docx, xlsx, csv, pptx, rtf, txt, html, jpg, png, BMP, jpg200, pub, MOBI SIGN & FORMS • Fill & edit forms • Create fillable forms with buttons, checkboxes, and list boxes • Create signature and sign on PDF • Create signatures using trackpad, keyboard, or images EDIT PAGE • Merge & split PDFs • Extract, rearrange, rotate, delete, and crop PDF pages • Change PDF background color • Append pages from

Introducing a rapid market-ready solution designed for the extraction of information from unstructured PDFs, images, and scanned documents, featuring an intuitive template editor that requires no coding skills. Users can easily create templates using a visual interface, enabling the support of fields, tables, PDF forms, and both multi-paged and unstructured tables. The solution harnesses a robust OCR engine that accommodates multiple languages, allows for the reuse of AI-driven templates, and efficiently extracts text, tables, images, attachments, and various data types from PDFs. It reads tables and converts them into CSV format, retrieves text from images, and extracts attachments while providing multi-language OCR capabilities. Additionally, it is equipped to manage noisy images and damaged text effectively through integrated OCR filters. The system facilitates conversion to popular data formats such as TXT, JSON, XLS, XLSX, CSV, or XML, and offers advanced AI-driven functions for table and document analysis, ensuring an all-encompassing approach to data extraction and management. Furthermore, its user-friendly nature makes it accessible for all levels of users, enhancing productivity and efficiency in document processing tasks.

PDF Automation Server – PDF Processing Server PDF Automation Server provides a wide range of PDF processing functions to suit different environments. PAS is an essential tool for streamlining your PDF processing, document workflows, and web service orchestration. REST API Module Use RESTAPI calls to integrate into your existing workflows HTML5 PDF Module Convert and serve PDF files directly in your browser Workflow Module Robust, RESTAPI PDF Automation Server provides a complete suite of PDF processing and conversion capabilities in a robust RESTserver environment. It can integrate into existing document workflows and integrate with third-party integration and orchestration tools. HTML PDF Markup Module PDF Automation Server allows you to markup PDF documents in your browser.

Add robust PDF features to your apps with the easy-to-integrate MuPDF SDK/ The small yet fast viewer supports a number of document formats including PDF, XPS, OpenXPS, CBZ, and ePUB. The renderer is designed for high-fidelity anti-aliased graphics and renders text with metrics and spacing accurate to within fractions of a pixel. The PDF library includes interactive features such as annotations, form filling, digital signatures, redactions, and search. The command-line tools provide users myriad customization options for rendering and converting documents, and manipulating PDF files. MuPDF supports document conversion to other formats including HTML, SVG, and CBZ. In addition to the C library, there's a Java library using JNI that works for both Oracle's Java and Android. In addition to the Java API, C++ and Python bindings have been developed. MuPDF supports most of the major coding environments and operating systems. It is highly flexible and optimized for each unique platform. MuPDF API has been used as the PDF engine in a variety of deployments ranging from Android and iOS mobile applications, SaaS and cloud solutions, document management programs, and embedded products, to name a few.

ComPDFKit PDF SDK is a product of ComPDF, offers a top-quality PDF SDK and PDF API for companies, organizations, small businesses, and developers. It enables you to integrate PDF document annotation, editor, conversion, form filling, and signing into your applications or products, saving you time and expenses. ComPDFKit is compatible with Windows, Web, Android, iOS, Mac, Linux, and other cross-platform frameworks such as React Native, Flutter, and Electron with just a few lines of code. 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.

novaPDF can create PDF files from any printable document. This includes emails, MS Office documents, web page, and text. It acts as a printer driver, and you can print from any Windows program that supports printing. Simply set novaPDF Pro to be your default printer and the document will convert and be saved as a PDF file. You can customize the resolution, security, profile, bookmarks, text/image compression and more.

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

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

The PDF Xpansion SDK 17 offers features, methods, and functionality that allow software developers to create PDF/A-enabled applications and software solutions. It provides a variety of options for creating, editing, and printing PDF, PDF/A, and XPS documents. These can be used to display and print them on paper and for conversions between these formats and exporting or importing from/to any other file format. PDF Xpansion SDK 17 also includes eInvoicing functionality for formats ZUGFeRD Factur-X, XRechnung, and Factur-X. It allows software developers to integrate EU-compliant electronic billing functionality (creation and display of electronic invoices, as well as the reading and printing thereof) according to EU standard. The SDK allows you to integrate these functions into Windows desktop apps for the PC as well as Windows Apps. It allows for modularized purchases of different functionality. This makes it very flexible and only the features that are actually required can be purchased.

AmindPDF's user interface is very user-friendly and makes the operation of PDF easy. It can recognize PDF text as paragraphs or whole blocks of text, allowing users to edit text directly and smoothly, like in MS Word. for PDF protection, it allows adding passwords, setting document permissions, placing signatures, adding watermarks to PDF. It also supports batch operations to process files, such as merge/split tool, compression tool, creation tool, Bates numbering tool, and conversion tool, so users can process multiple PDF files at once. AmindPDF is available for a number of platforms: Windows, iOS, and Android. Users are able to use the same PDF tool on a computer or mobile phone. So AmindPDF let you process or edit PDFs anytime, anywhere. Edit PDF Text: AmindPDF allows the user to change the font, font size, font color, and font style, and reset the alignment of pdf text. Edit Images: The user can select the images in pdf, then manipulate the images: replace an image, rotate the image, crop the image, or remove the image. AmindPDF can combine more than one PDF or image file into one PDF. The file name of being combined files will be used to build the outline of the combined pdf.

The PDFix SDK empowers users to automatically enhance the accessibility of existing PDF documents. It facilitates the conversion of standard PDFs into high-quality, accessible PDF/UA formats. With its auto-tagging capability, the SDK identifies crucial document elements such as text, images, tables, headers and footers, headings, lists, and reading order. By enabling automated batch processing, it not only saves valuable time but also significantly lowers remediation expenses. If you've ever attempted to extract information from multiple PDF files, you certainly understand the challenges involved. Utilizing advanced machine learning techniques, the SDK has developed an algorithm that enables seamless and structured data extraction. As a result, users can easily identify various logical components, including text, headings, images, tables, headers and footers, and lists. Furthermore, it allows for scraping data from PDFs and converting it into your preferred formats, such as HTML, CSV, JSON, or XML, making the process much more efficient and user-friendly. This functionality is particularly beneficial for organizations aiming to improve their document accessibility and streamline data management.

FPDF is a PHP-based tool that enables the creation of PDF files directly through PHP, making it an alternative to the PDFlib library. The acronym FPDF stands for "free," indicating that it can be utilized and customized without restriction to meet various user requirements. This library functions without the need for additional PHP extensions, aside from Zlib for compression and GD for GIF functionality, and is compatible with PHP versions 5.1 and later, including PHP7 and PHP8. With a range of tutorials available, users can quickly learn to navigate FPDF effectively. Notably, FPDF supports the generation of documents in multiple languages beyond just Western European scripts, accommodating Central, Cyrillic, Greek, and Baltic languages, provided there are suitable TrueType or Type1 fonts available. Additionally, it offers support for UTF-8 encoding. While the document generation speed may not match that of PDFlib, it is still quite reasonable and sufficient for most applications unless specific document precision is required. This versatility makes FPDF a popular choice among developers looking for a straightforward PDF generation solution.

Integrate the Kdan PDF SDK library to provide your applications with advanced features for viewing, editing, signing, annotating, and more, across mobile, desktop, and web platforms. This SDK enhances your application by offering a comprehensive suite of professional PDF functionalities tailored for smartphones and tablets. We provide a range of flexible kit options, allowing developers to begin with our demo version and choose a plan that best aligns with their requirements. With a decade of innovation and experience, Kdan's PDF viewer engine has been refined to ensure optimal performance. Regular updates are introduced to maintain the stability of your applications. The integration process is straightforward, guided by our comprehensive SDK documentation, which allows developers to concentrate on the app's design. Additionally, developers have the option to create customized user experiences through fully adjustable UI source code or to utilize the pre-built UI elements provided for quick implementation. Regardless of the platform chosen, our PDF SDK empowers developers to create robust applications capable of viewing, editing, and annotating PDF documents efficiently, ultimately enhancing the user experience. With these capabilities, your applications can stand out in a competitive market.

The PDF Viewer SDK is a powerful visual component designed for building custom PDF readers in .NET desktop applications. This control allows users to view PDF files offline, eliminating the need for an Internet connection, and includes features such as zooming in and out, navigating between pages, copying text to the clipboard, conducting text searches, and enabling a night mode that changes the background to black while inverting the text color for easier reading. Our tools incorporate advanced technologies that enhance performance, ensuring that users have a seamless experience. Additionally, we provide a wide array of source code examples and extensive documentation to facilitate a quick start with our products. We continually update our SDKs, APIs, and free applications to improve functionality and user experience. Furthermore, our dedicated team is available to address any bugs or issues that may arise, reinforcing our commitment to customer satisfaction. Overall, we strive to ensure that developers can easily integrate and utilize our tools in their projects.

FormVu provides HTML/JavaScript/CSS content for Chrome, Edge, Firefox, and Safari on Linux/MacOS/Windows and also mobile/tablet devices running Android or iOS. The PDF forms will appear in the Browser as they appeared in Acrobat with the correct layout, formatting, and styles. Embedded fonts are converted. FormVu supports both AcroForms and XFA Forms. All forms are converted into HTML5/CSS and JavaScript preserving style and layout. JavaScript is converted to run inside the browser, preserving validation and calculations in the forms. XFA FormCalc is also supported. FormVu provides an easy-to-use converter. It does not require a dedicated server or infrastructure and generates clean, standalone HTML content. FormVu is designed to integrate easily into the existing PDF workflow. Data can be edited, updated, and resaved back into the original PDF document or sent back to the server.

JPedal makes it easy to work with PDF files in Java. All common tasks can be solved by simply adding a few lines code to your application. IDRsolutions has been actively developing the software for more than 20 years. It can work with any problem PDF files. JPedal supports all PDF 2.0 file specifications, including Encyption and Blending, Forms and Annotations, PostScript and OpenType fonts. JPedal comes with lots of sample code and APIs that can be easily integrated into your code. Adding a feature to your code requires only 2-3 lines of code. JPedal uses its own font engine and custom images libraries to produce high quality images and provide maximum Java performance. JPedal is actively being developed with nightly builds as well as monthly releases. The same people who code the code also provide support.