Alternatives to AiDO for Developers
Compare AiDO for Developers alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to AiDO for Developers in 2026. Compare features, ratings, user reviews, pricing, and more from AiDO for Developers competitors and alternatives in order to make an informed decision for your business.
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Adobe Acrobat
Adobe
Adobe Acrobat Studio is a leading enterprise document platform built to scale for global teams — delivering AI-powered document intelligence, trusted PDF tools, and on-brand content creation in one secure solution. Core capabilities include PDF creation, editing, conversion, annotation, redaction, e-signatures, and fillable forms. AI Assistant enables conversational document intelligence across PDFs, Word docs, spreadsheets, and more — surfacing summaries, key insights, and source-linked citations for verified, audit-ready answers. PDF Spaces organizes files, collaboration, and context into centralized knowledge hubs. The Generate Presentation feature transforms any document into a polished, branded deck using AI and Adobe Express templates. Enterprise-grade encryption, admin controls, and compliance workflows support secure document sharing and high-volume document processing at scale — across Legal, Finance, HR, Sales, and more. Available on desktop, web, and mobile. -
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Foxit provides a powerful suite of cloud-native APIs that help organizations automate, secure, and modernize document workflows. Built on scalable REST architecture, Foxit APIs enable developers to generate, convert, extract, sign, and display documents directly within applications—eliminating manual processes and accelerating digital operations. The Foxit PDF Services API supports high-volume PDF automation, including conversion, extraction, optimization, and redaction. The Document Generation API creates dynamic PDFs and DOCX files from templates and real-time business data. The Foxit eSign API embeds legally binding eSignature workflows with full audit trails and compliance support. The PDF Embed API delivers customizable in-app PDF viewing, annotations, and secure access controls. Together, Foxit APIs provide a secure, scalable foundation for end-to-end document automation and digital transformation.
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Nutrient SDK
Nutrient
Nutrient is the deterministic document platform for agents and humans. For more than 15 years, it has built the document infrastructure enterprises rely on when fidelity, control, and compliance matter — SDKs, cloud APIs, low-code integrations for M365 and Salesforce, and a workflow automation platform, now unified with AI assistants, agent tooling, data extraction, and human review into one layer for reliable agentic document workflows. Nutrient powers thousands of organizations, including more than 15 percent of the Global 500, thousands of commercial businesses across 80 nations, and more than 130 public sector organizations in 24 countries. Backed by Insight Partners and based in Raleigh, N.C., Nutrient operates offices in England, France, and Austria, and integrates technology from PSPDFKit, ORPALIS, Aquaforest, Muhimbi, and Integrify. Visit nutrient.io. -
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RAD PDF
Red Software
Add a fully functional PDF editor to your ASP.NET website in minutes! Compatible with 99% of desktop & mobile browsers, from Internet Explorer 6 through the latest iOS Safari release, RAD PDF simply works. No plugins or other software needed. RAD PDF natively supports the most commonly used PDF features. Beyond a PDF reader, RAD PDF equips web applications with a browser-based PDF editor & PDF annotator. Features not even available in Adobe Acrobat Reader can be used to provide advanced PDF functionality. By enabling PDF form filling, PDF redaction, & PDF signing directly in the web browser, RAD PDF users can utilize PDF features without worrying about having the right platform or software installed! Allow your app to design new PDF forms, protect content, sign PDFs, & more using an intuitive graphical user interface (GUI). Client (JavaScript) and server APIs allow for endless possibilities .NET Core, Framework, & .NET 5+ supported Try editing any PDF with RAD PDF, FREE! -
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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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Adobe PDF Library SDK
Datalogics Inc.
Adobe PDF Library is the only commercial PDF SDK built on Adobe Acrobat's own core engine, delivering the same rendering accuracy, PDF spec coverage, and behavior as Acrobat itself. Available in Modern C++, Adobe C/C++, .NET, .NET Framework, and Java, and supported on Windows, macOS, and Linux. Create, edit, merge, split, annotate, and watermark PDFs programmatically; convert to and from Word, Excel, PowerPoint, PDF/A, PDF/X, and more; add OCR, digital signatures, redaction, and encryption; and process AcroForms and XFA forms. SOC 2 Type 2 compliant, with a 91% customer retention rate among enterprise users. For enterprise deployment, the pdfRest API Toolkit Container packages this technology as a self hosted REST API for on premises, private cloud, or hybrid environments. Datalogics also offers Scout, an AI assistant, and an MCP server so teams can bring PDF capabilities into AI powered workflows.Starting Price: $5,999 -
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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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pdfRest API Toolkit
Datalogics Inc.
pdfRest is a REST API for high-volume PDF processing, built on the Adobe PDF Library. Call it from any language to convert, generate, extract, secure, and prepare PDFs in production pipelines, chaining calls by passing a resource ID between steps. Convert Office, HTML, images, email, and Markdown to PDF, and PDF to Word, Excel, PowerPoint, images, Markdown, PDF/A, PDF/X, and PostScript. Generate PDFs from scratch with text, images, shapes, and attachments, with accessibility tagging. Extract via OCR, text/image extraction, form data, metadata, AI summarization, translation. Secure with signing, encryption, restrictions, watermarking, two-step redaction, and TDM Reserve to opt out of AI training. Handle prepress: color conversion, transparency flattening, page boxes, rasterization. Manage forms: import/export, flatten, XFA-to-AcroForm. Deploy on pdfRest Cloud (US or EU) or self-host via Docker, Kubernetes, or AWS Marketplace (BYOL) — same API, same code, just change the base URL.Starting Price: $0 per month -
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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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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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JPedal
IDR Solutions
JPedal is a versatile Java PDF Library for displaying, converting, printing, and parsing PDFs in Java applications. With over 20 years of development, it supports a wide range of PDF files. Key features include: -PDF to Image Conversion: Converts PDFs to images in various formats. -Java Swing PDF Viewer: Offers multi-page display, search, printing, and annotation editing. -Text and Image Extraction: High-quality extraction of text and images from PDFs. -PDF Search: Supports searching with wildcards and regular expressions. -Form & Annotation Handling: Supports XFA and AcroForms, enabling form data access and annotation editing. -Document Manipulation: Allows deleting, merging, splitting, and optimizing PDFs. -Security & Performance: Runs locally without third-party dependencies, processing PDFs up to 3x faster than alternatives.Starting Price: $950 one time fee -
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jPDFEditor
Qoppa Software
jPDFEditor is intended for developers and integrators. For end-users, Qoppa Software offers PDF Studio, our advanced desktop PDF editor for Mac, Windows and Linux based on our same solid PDF technology. jPDFEditor 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. After editing documents, the library can save them. Features: -Display PDF files -Print PDF files -Convert text and image files (gif, png, jpg, tiff) to PDF on the fly -Fill and save interactive PDF forms -Markup PDFs (all PDF annotations and text markups supported) -Digitally sign PDF files -Content editing -Redaction -Optional OCR module -Optional Comparison module -Access jPDFProcess powerful PDF manipulation API -Text search, selection, copy -Easy navigation with thumbnail, bookmark, annotation, signature views -Advanced tools: zoom, loupe, snapshot, pan and zoom -
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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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MuPDF
Artifex Software
Add powerful PDF functionality to all of your software application projects. MuPDF is a highly versatile, customizable PDF SDK that can be used as a PDF renderer, viewer, or library. The tiny footprint and lightning-fast performance make MuPDF a perfect fit for mobile browsers, eBooks, and embedded applications where small size is key. MuPDF supports a variety of interactive features including annotations, form filling, digital signatures, redactions, text search, and progressive loading. The wide range of input and output formats and our full range of platform support deliver a flexible solution to easily and successfully fulfill your project’s unique needs. MuPDF supports PDF, XPS, OpenXPS, EPUB, FictionBook 2 and CBZ. The MuPDF API easily integrates with all of the major platforms including Android, iOS, Linux, macOS, OpenBSD, and Windows. C++ and Python bindings have been added making it easy to use the MuPDF library from these languages.Starting Price: $749/per platform* -
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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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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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KovaPDF
KovaPDF
KovaPDF is a browser-based PDF toolkit with a Windows desktop app and a phone web app that can be installed from a browser. Individuals and teams can edit PDF text, annotate pages, fill or create forms, redact content, and add page numbers or watermarks. Users can sign PDFs by drawing, typing, uploading a signature, or using a digital certificate; request signatures from multiple people; and verify signatures. Other tools merge, split, compress, protect, unlock and convert PDFs to and from Office files and images, and run OCR on scans. Most tools can be used free without an account, subject to usage limits. Paid plans provide higher limits and team features. The Windows app runs selected tools offline, while the phone web app scans paper documents into PDFs. A REST API supports signature requests, certificate-based signing and signature verification; API access is priced separately.Starting Price: $3.99/month -
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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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ComPDF
PDF Technologies, Inc.
ComPDF, powered by KDAN (TPEx: 7737), is built on the vision of “Leading the Intelligent PDF Era with Continuous Innovation”. ComPDF offers following products: - ComPDF SDK is highly compatible with web, server, desktop, and mobile platforms, seamlessly integrating with various development frameworks. It provides features lincluding generation, viewing, editing, conversion, signing, etc. - ComPDF Cloud delivers a secure, stable, and efficient service environment, simplifying enterprise document processing and business integration workflows. With the flexibility to use either Open API calls or private deployment, enterprises can generate, edit, convert, OCR recognize, and extract data. - ComPDF AI provides intelligent document processing capabilities, enabling automated data extraction, parsing, and knowledge management. Together, these components streamline workflows, improve operational efficiency, and accelerate enterprise digital transformation. -
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PDFKit
PDFKit
PDFKit is a PDF document generation library for Node and the browser that makes creating complex, multi-page, printable documents easy. The API embraces chainability, and includes both low-level functions as well as abstractions for higher-level functionality. The PDFKit API is designed to be simple, so generating complex documents is often as simple as a few function calls. Access privileges (printing, copying, modifying, annotating, form filling, content accessibility, document assembly). Accessibility support (marked content, logical structure, Tagged PDF, PDF/UA). Supports JPEG and PNG files (including indexed PNGs, and PNGs with transparency). In addition to PDFKit, you'll need somewhere to stream the output to. Note that in order to Browserify a project using PDFKit, you need to install the brfs module with npm, which is used to load built-in font data into the package. -
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KDAN PDF
Kdan Mobile Software
KDAN PDF is a high-performance document intelligence solution designed for professionals who require robust editing and analysis tools across Windows, Mac, iOS, and Android. It functions as a comprehensive PDF engine that streamlines the document lifecycle through advanced AI integration. Users can leverage the built-in AI assistant to summarize long reports and extract structured data from complex files instantly. The software excels in high-accuracy OCR, supporting over 50 languages to transform scanned images into searchable text. Key metrics of KDAN PDF include its optimized app launch speeds and powerful offline processing capabilities, allowing for secure text editing, file conversion, and page management without an internet connection. With features like Bates numbering, secure redaction, and multi-format conversion (Office, HTML, ePub), KDAN PDF provides a flexible and efficient environment for managing professional digital archives on any device.Starting Price: $59.99/year (billed annually) -
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PDFBox
Apache Software Foundation
The Apache PDFBox® library is an open-source Java tool for working with PDF documents. This project allows the creation of new PDF documents, manipulation of existing documents and the ability to extract content from documents. Apache PDFBox also includes several command-line utilities. Apache PDFBox is published under the Apache License v2.0. Extract Unicode text from PDF files. Split a single PDF into many files or merge multiple PDF files. Extract data from PDF forms or fill a PDF form. Validate PDF files against the PDF/A-1b standard. Print a PDF file using the standard Java printing API. Create a PDF from scratch, with embedded fonts and images. Save PDFs as image files, such as PNG or JPEG and digitally sign PDF files. See also the export control information related to the encryption features included in Apache PDFBox. -
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TechPDFKit
PDF Technologies
Seamlessly enable high-performance PDF viewing, annotating, editing, signing, and more in your apps or any mobile, desktop or server framework. Build on a modern tech stack that integrates tightly with the platform you're working on. We grow with you as your requirements change and your project evolves. Maintain a smooth viewing experience in even the most complex PDF documents with a fast and battle-tested rendering engine. Lightning-fast search delivers near-instant results to your users. Markup PDFs with highlights, stamps, and comments, draw and add notes to PDFs, or create custom annotations. Make use of many more annotation types, each with its own style controls. Apply electronic and digital signatures in PDFs to speed up paperless workflow and secure document signing. Certify, and validate certificate-based documents you receive. Automatically detect font and size of the original text content. Easily update PDF documents by changing text and images. -
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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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jPDFOptimizer
Qoppa Software
jPDFOptimizer is a Java library to optimize and reduce the size of PDF documents. jPDFOptimizer can remove unnecessary objects in PDF documents, detect and merge duplicate images and fonts, and modify image resolution, compression and color spaces to reduce size. The library provides a powerful, yet simple API to let the calling application fine tune how to optimize documents. jPDFOptimizer is built on Qoppa Software’s extensive PDF technology and requires no third party software or drivers. The library is 100% Java and can run on any operating system for which there is a standard Java implementation, such as Windows, Linux, Unix, Solaris and others. Features: -Modify image resolution, compression and color spaces -Compress images using JPEG, JPEG 2000 and JBIG2 -Compress data streams -Remove unused objects -Remove and merge duplicate images and fonts -Flexible optimization options -Linearize PDFs for fast web view -Support for latest PDF format -Support for JDK 1.6+ -
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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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PDFGate
PDFGate
PDFGate is a document automation platform focused on electronic signatures, PDF generation, and document processing. Businesses can prepare and send documents for legally binding electronic signatures, assign recipients and fields, track signing progress, reuse templates, send automatic reminders, and maintain detailed audit records. Recipient email verification and consent records help support secure and traceable signing workflows. PDFGate also includes tools for automated PDF generation and processing. Businesses can generate PDFs from HTML, URLs, templates, and application data, and use features such as fillable PDF fields, form data extraction, flattening, watermarking, compression, encryption, and password protection. PDFGate can be used directly through its dashboard or integrated into existing systems using APIs and SDKs. This makes it suitable for both teams that want a straightforward signing workflow and companies that need to automate document creation, processing,Starting Price: $9/month -
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Aspose.PDF
Aspose
Aspose.PDF provides the most complete set of PDF manipulation and parsing solution for developers & end-users. Aspose.PDF for .NET is an advanced PDF Processing API for .NET Core to perform document management and manipulation tasks within cross-platform applications. API can easily be used to generate, modify, convert, render, secure and print documents without using Adobe Acrobat. Moreover, API offers compression options, table creation & manipulation, graph & image functions, extensive hyperlink functionality, stamp and watermark tasks, extended security controls and custom font handling. Aspose.PDF for Java is a fast and lightweight processing API to create, modify, render, secure as well as print PDF files without the use of Adobe Acrobat. API also supports working with TXT, HTML, PCL, XML, XPS and image file formats. -
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Document APIs
GrapeCity
Fast, efficient Document APIs for .NET Standard 2.0 and Java Take total document control with ultra-fast, low-footprint document APIs for enterprise apps. Generate, load, edit, save spreadsheets, PDF, images, and DOCX files. Create large spreadsheets, Word, images, and PDF documents, fast. No dependencies on Excel, Word, or Acrobat Run on Windows, Mac, Linux Deploy to Azure, AWS, and 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!Starting Price: $999 per developer -
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ByteScout PDF Viewer SDK
ByteScout
PDF Viewer SDK is a visual control to create your own PDF reader in .NET desktop apps. Controls for viewing PDF files in your .NET desktop app, works offline with no Internet connection required, helper function zoom in and zoom out, change page, copy text to the clipboard, search text, night mode for PDF reading (sets the background to black, inverts text). You will find a mixture of very sophisticated technologies in all our tools. It helps them to achieve better performance. We prepared lots of source code samples and documentation helping to quickly start working with our products. You will find a mixture of very sophisticated technologies in all our tools. It helps them to achieve better performance. We keep updating our SDKs, API, and free apps all the time. Also, our team is ready to fix bugs and issues if you find any. We prepared lots of source code samples and documentation helping to quickly start working with our products.Starting Price: $881.99 one-time payment -
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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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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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PDFWix
HHG Softech
PDFWix is a free online PDF toolkit with no watermarks, no account required, and no daily limits. Most tools run entirely in your browser via WebAssembly — your files never leave your device. Tools include: Merge, Split, Organize, Rotate, Extract & Remove Pages PDF to JPG / PNG, JPG to PDF, HEIC to JPG Fill PDF Form (AcroForms), Sign PDF (e-signatures) Watermark, Page Numbers, Crop PDF Redact PDF (rasterizes the page — text is truly gone) Repair PDF, Protect PDF (AES-256), Unlock PDF Compare PDF — side-by-side diff Works on Windows, Mac, iPhone, Android and Chromebook. No installation needed. Funded by a pay-as-you-go developer API, keeping the web tools permanently free.Starting Price: Free -
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RadaeePDF SDK
RadaeePDF
This is the well-known SDK for Android, iOS and Windows UWP. Our team began its development in early 2012 and starting from May-2012 and we have never stopped improving it since. RadaeePDF Classic includes fully customizable frameworks respectively written in Java, Objective-C and C#. We complete the range with simplified Cordova and Xamarin plugins (Android and iOS). RadaeePDF Classic SDK has been adopted by more than 6000 SMB and large corporations in more than 8500 applications. Some of its included features are PDF read, different rendering layouts, support of PDF annotations, text search and extraction and dozens more. The Master Edition represents a huge step forward compared to the previous Classic version, and introduces advanced features like complete form fields manipulation, pdf linearization and optimization, xfdf import/export, signature and certificate handling, and much more. -
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pdfRest API Toolkit Self-Hosted
Datalogics Inc.
pdfRest is a REST API for high-volume PDF processing, built on the Adobe PDF Library. Call it from any language to convert, generate, extract, secure, and prepare PDFs in production pipelines, chaining calls by passing a resource ID between steps. Convert Office, HTML, images, email, and Markdown to PDF, and PDF to Word, Excel, PowerPoint, images, Markdown, PDF/A, PDF/X, and PostScript. Generate PDFs from scratch with text, images, shapes, and attachments, with accessibility tagging. Extract via OCR, text/image extraction, form data, metadata, AI summarization, translation. Secure with signing, encryption, restrictions, watermarking, two-step redaction, and TDM Reserve to opt out of AI training. Handle prepress: color conversion, transparency flattening, page boxes, rasterization. Manage forms: import/export, flatten, XFA-to-AcroForm. Deploy on pdfRest Cloud (US or EU) or self-host via Docker, Kubernetes, or AWS Marketplace (BYOL) — same API, same code, just change the base URL.Starting Price: $0.242 per hour -
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AmindPDF
AmindPDF
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.Starting Price: $9.90 -
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PDFSign
PDFSign
PDFSign is a Windows desktop application for securely signing, editing, managing and processing PDF documents. It supports DSC-based digital signing, allowing users to sign individual or multiple PDF files in batch. AutoSign provides automated signing workflows through two modes: Batch Review and Watch Folder, enabling users to configure signing rules and automatically process incoming PDF documents. PDFSign also includes a comprehensive PDF Toolbox with tools to merge, split, reorder, extract, rotate, crop, compress and repair PDFs; edit text; add text and images; annotate, highlight and redact documents; add watermarks, headers/footers and page numbers; perform OCR; convert between PDF and common document/image formats; and fill forms.Starting Price: $1.99/user/month -
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AvePDF
PSPDFKit
Complete solutions for document processing, analysis and conversion. Providing innovative solutions for document imaging and document management. Imaging technologies. Since 2003, we develop solutions to manage electronic documents (locally or online). Below is a selection of the technologies used by ORPALIS: Full PDF support. View, process, edit, annotate, compress, and sign all your PDFs TWAIN and WIA scanning. Manage all scanners and acquisition devices. Barcode reading and writing. 1D and 2D (Datamatrix, QR-Code, Micro QR-Code, PDF417, and more). Hyper-compression. Mixed raster. Content compression, Color Detection, JBIG2 & JPEG 2000 compression. Formats support. View and convert documents in 100+ formats Optical Character Recognition (OCR) Extract text and MICR characters from scanned images. Form/template recognition. Automatic Document Recognition and forms processing. Annotations. Use various tools to annotate your documents online and offline. -
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DonePDF
DonePDF
DonePDF is a browser-based toolkit for working with PDFs. It offers conversion between PDF and formats such as Word, Excel, PowerPoint, images and HTML; merging and splitting; page reordering, rotation, removal and addition; compression and repair; and signatures, annotations, watermarks and page numbers. Users can protect or unlock files, redact content, compare documents and make scans searchable with OCR. The editor adds text and images, fills forms, signs, highlights and comments. Its text-replacement tool overlays original text instead of changing underlying PDF text. Most tools process files in the browser; some operations use server processing. DonePDF runs in browsers without installation and has free tools with no account or watermark. Its interface supports 20 languages, including Arabic and right-to-left layout. File-size limits vary by tool.Starting Price: $0 -
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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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DocSpring
DocSpring
DocSpring is an API for filling, generating and signing documents. Upload a PDF form and AI sets up its fields, type tags into a Word document, design a page in the Page Designer, or write HTML and CSS. Send JSON from your app and get back a filled PDF or Word file. Collect e-signatures from several signers, share web forms, and embed the template editor in your own app. SDKs in 10 languages, an MCP server for AI agents, SOC 2 Type II, HIPAA compliant and US or EU hosting. Start free, no credit card needed. Teams in lending, insurance, property and healthcare use DocSpring for loan, insurance and rental applications, patient intake and consent forms, tax forms such as the W-9, invoices and certificates, contracts sent for e-signature, and reports with tables and charts.Starting Price: $49 per month -
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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 Studio Viewer
Qoppa Software
PDF Studio Viewer is a cross-platform PDF reader that is reliable and easy to use. PDF Studio Viewer can annotate PDF documents and fill interactive forms. For more editing features, Qoppa Software publishes PDF Studio Standard and Pro editions. Features: -Display PDFs with high fidelity -Annotate & Markup PDFs -Fill & Save Forms -Render Digital Signatures & Layers -Advanced User Interface -Advanced Print & Search Options -Document Storage Integrations -DocuSign© Integration -
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SignFlow
PDF Technologies
Simple but mighty! SignFlow makes reading, annotating, editing, e-sign, organizing, filling, secure PDFs effortless! Packed with essential PDF tools, SignFlow is your best PDF files partner. SignFlow allows you to apply a legally-binding digital signature in PDFs, and it provides an effortless PDF solution for you to create, edit and fill out PDF forms. You can edit text in PDFs like word, manage and edit PDF pages, annotate and view your PDFs. Enjoy different reading modes, such as Full-Screen, Single Page, Read Mode, Split View, Multi-tab. You can smoothly scroll pages and switch between day mode, night mode and eye-protection mode. Annotate to remember! You can highlight, underline, strikethrough texts in PDF. There are colors for you to emphasize different information. Enrich your PDFs with standard business stamps like APPROVED, digital stamps, dynamic stamps and custom text/image stamps. -
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WebPDF
SC Dailydriven United SRL
WebPDF is an online service that provides an easy an accessible way to alter PDF files. You can do any of the following operations using the web interface, but there's also a developer friendly API that you can integrate into your own application: Merge multiple PDFs Split PDF Compress PDF Extract PDF metadata Flatten PDF forms Extract images from PDF Extract text from PDF Lock & Unlock PDF OCR PDF Change PDF size Change PDF version Watermark PDF Optimize PDF for web Rescale PDF There are many other tools not mentioned here and lots more to be released. You can try WebPDF for free, even without an account.Starting Price: $4/month -
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UsePDF
UsePDF
UsePDF is an all-in-one online PDF platform designed to help users edit, convert, compress, merge, sign, and manage documents directly in the browser. The platform provides fast and secure tools for converting PDFs to Word, Excel, JPG, PowerPoint, and other formats while also supporting OCR, fillable forms, annotations, page organization, password protection, and e-signatures. UsePDF is built for individuals, freelancers, businesses, students, and teams looking for simple and efficient document workflows without installing software. The platform works across desktop and mobile devices and integrates with cloud storage services such as Google Drive, Dropbox, and OneDrive for seamless file management.Starting Price: $12.95/month -
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jPDFWeb
Qoppa Software
jPDFWeb is a Java library to convert PDF documents to SVG / HTML5. The library can save to the local file system or to an output stream to be able to serve the document directly to a client browser when working within a J2EE server. jPDFWeb is built on top of Qoppa’s proprietary PDF technology so you do not have to install any third party software or drivers. Since it is written in Java, it allows your application to remain platform independent and run on Windows, Linux, Unix (Solaris, HP UX, IBM AIX), Mac OS X and any other platform that supports the Java run-time environment. Features: -Convert PDF Documents to HTML5 / SVG -Convert Microsoft Word & Excel Documents to HTML5 (when combined with jOfficeConvert) -Convert Text -Convert Images -Convert Vector Graphics -Convert Annotations, Links and Form Field Data -Convert Digital Signature Validation Status -Export Page Thumbnails -Support for CJK fonts -Support for latest PDF format -
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pdfDocs
Litera
pdfDocs by Litera is a comprehensive PDF management application tailored for legal professionals, enabling users to create, edit, collate, bind, redact, and secure PDF documents with ease and efficiency. The platform streamlines productivity by allowing seamless editing without the need for conversion to Word, facilitating quick modifications to text and images, annotation, and the application of digital signatures. Its integration with core business systems ensures a cohesive workflow, enhancing document management processes. pdfDocs also offers robust security features, including permanent redaction, document encryption, and restrictions on printing, copying, and modifying, thereby protecting sensitive information. Add, remove, or rearrange pages. Modify text or images. Annotate, apply digital signatures, and more. Create PDFs optimized to meet legal industry requirements and validate them for PDF/A compliance. -
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CoolNew PDF
CoolNew Software
CoolNew PDF offers all-in-one experience to awesomize your PDF experience. All the tools you’ll need to be more productive and work smarter with documents.21 tools to convert, compress, and edit PDFs . Conversion features include CAD, office, image, texted and scanned copy conversions. Editing features include text, image, eraser, page number, size, watermark, paragraph and more. Users can combine or split PDFS, extract contents and optimize pdfs. merge and compress PDF. Reading and annotation features included. It edits, annotates, converts and combines file by one click, makes your tasks finish faster. CoolNew PDF offers you a familiar experience for editing PDF, just like you did it in Office.Starting Price: $6.49 -
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PDF Viewer Pro
PSPDFKit
With PDF Viewer for iPad, iPhone, Mac, and Android, you get annotations, forms, signatures, document editing, and sharing, all in one free package. Whether you're working alone or collaborating with a team, PDF Viewer maximizes productivity, allowing you to easily read, review, annotate, and search PDFs. Your documents should always be at your fingertips. No matter if you're prepping on the way to your next meeting, reviewing a proposal, or reading over the latest offer, our PDF Viewer allows you to view PDFs when it's convenient for you. Annotating your PDF documents by highlighting text, adding notes, freehand ink drawings, images and more is simple and easy with PDF Viewer. When you've finished, easily share or print those documents too. Highlight text, ink drawing, and adding images and notes, are just some of the many annotation types available. Using the annotation inspector, you can quickly adjust the style of your annotations to fit your needs.Starting Price: Free
