LEADTOOLS OCR/ICR
Extract machine-printed and handwritten text with unparalleled speed and accuracy. Whether you want to convert an image to a string, extract values from fields on a form, business cards, invoices, and identification documents such as passports the LEADTOOLS OCR APIs give you the power to make it happen.
LEADTOOLS Barcode
Reduce the bottleneck issues in high-speed scanning applications by utilizing the fastest barcode recognition speed. Detect, read, and generate over 100 barcode types using libraries that maximize high-speed processors and automatically take advantage of multiple threads and cores.
LEADTOOLS PDF
With just a few lines of code, LEADTOOLS libraries empower developers with a comprehensive PDF API to read, write, convert, and view PDF files without the need for third-party dependencies like Acrobat.
LEADTOOLS Image Processing
Over 200 image processing functions including document cleanup, medical image enhancement, color conversion and correction, noise reduction, and edge detection. Tested against millions of real-world images, LEADTOOLS Image Processing libraries are the fastest, most robust, and most accurate functions available.
LEADTOOLS DICOM
A wide range of development tools to create entire DICOM-compatible applications that include DICOM data sets, directory (DICOMDIR), secure communication, security, 2D and 3D viewers, video playback, and medical-specific image viewing and processing. Following the latest DICOM specification, the DICOM APIs support all IODs with or without optional modules and elements.
LEADTOOLS PACS
Implement DICOM Communications to query, retrieve, and store DICOM data sets and pixel data between PACS clients and servers. LEADTOOLS provides easy to use, low and high-level components to rapidly develop an entire PACS solution or any component of a PACS workflow.
LEADTOOLS Medical Viewer
LEADTOOLS includes several Medical Viewers to display DICOM data sets and pixel data. Each viewer includes advanced medical-specific features such as multi-cell and sub-cell layouts, 16-bit extended grayscale, window leveling, image stack, metadata tags, annotations and markup, reference lines, and cine.
LEADTOOLS Multimedia Video/Audio
LEADTOOLS Multimedia SDK products are specifically designed for the development of audio/video applications across a wide variety of industries, including defense, broadcast, and security. The SDKs offers a full range of libraries to developers and turns normally complex DirectShow and Media Foundation projects into simple tasks.
LEADTOOLS Forms Recognition & Processing
Forms come in a variety of shapes, sizes, and uses, and LEAD's patented forms classification libraries and AI-enhanced tools will handle them all. In addition to basic forms recognition with static field locations, LEADTOOLS libraries can detect and process unstructured and loosely structured documents such as invoices, business cards, and passports.
LEADTOOLS Document Viewer
Developers can create robust, full-featured applications with rich document-viewing features, including text search, annotation, memory-efficient paging, inertial scrolling, and vector display. With only a few lines of code, the LEADTOOLS Document Viewer can be added to any project.
LEADTOOLS Document Converter
Create powerful, automated document conversion, archival, and delivery systems using LEADTOOLS. Under the hood, the Document Converter uses artificial intelligence to intelligently select a combination of the LEADTOOLS Raster, SVG, OCR, and Document Writer technologies to convert images and documents using the best possible blend of accuracy and speed.
LEADTOOLS Document Compare
The LEADTOOLS Document Compare SDK is an OEM-ready, zero-footprint document-comparison solution. Developers can add full-featured Document Comparison technology to their applications so that end-users can find and see all text insertions, deletions, and edits in two images or text-searchable documents.
LEADTOOLS Document Analyzer
The Document Analyzer intelligently detects and extracts text, paragraphs, or any key-value from text-based office documents (DOC, DOCX, XLS, XLX), PDFs, and document images (JPG, TIFF, PNG PDF) based on rules. This smart data extraction automatically finds key phrases within structured and unstructured documents such as invoices, statements, bills, and receipts, even if the layouts between files are completely different.
LEADTOOLS Virtual Printer
LEADTOOLS Virtual Printer Driver can capture output from any application that can print, including Word, Excel, and web browsers. It is a gateway for your legacy applications to access the power of the LEADTOOLS libraries and modern workflows.
LEADTOOLS Image Viewer
Developers using LEADTOOLS are armed to conquer any display challenge with comprehensive image display controls for desktop, web, tablet, and phone platforms. LEADTOOLS viewers include core features such as high-level user-interactive modes, thumbnail display, and touchscreen input.
LEADTOOLS Office Formats
With LEADTOOLS, developers can create applications to load, save, and convert many industry-standard and proprietary formats. LEAD Technologies is committed to maintain and expand the most comprehensive support of file formats on the market including all major document and Office formats: PDF, PDF/A, DOC/DOCX, XLS/XLSX, PPT/PPTX and more.
Build Better Apps with LEADTOOLS
Powered by patented artificial intelligence and machine learning algorithms, LEADTOOLS is a collection of comprehensive toolkits to integrate recognition, document, medical, imaging, and multimedia technologies into desktop, server, tablet, and mobile solutions.
Tomorrow’s Technology in Your Hands Today
Quality software solutions are built upon quality development libraries. LEAD Technologies is the one-stop shop for all of your recognition, document, imaging, and multimedia library needs.
Click play to find out what LEADTOOLS can do for your business today!
Multifaceted Document SDK to Create, Edit, View, and Convert
Extensive Medical SDK for all Your DICOM and HL7 Needs
Robust and Comprehensive Imaging SDK
Powerful Multimedia SDK for Capture, Conversion, and Streaming
What's New at LEAD
- LEADTOOLS Wins 2021 Visual Studio Magazine Reader’s Choice Awards
- LEAD Technologies Celebrates 30 Years with the Release of LEADTOOLS Version 21
- What's New in LEADTOOLS Version 21
- LEAD Granted Patent

What's New at LEAD
Visual Studio Magazine announced the winners of their 27th annual Reader’s Choice Awards. LEAD had a very strong presence, winning two medals in two categories…
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Highlighting this major version release is a brand new Document Analyzer component that automatically searches, finds,
and takes action on data-of-interest within any structured or unstructured form and an ICR engine capable of robust
handwriting recognition. Additionally, numerous other LEADTOOLS libraries have received an impressive amount of
enhancements…
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LEAD Technologies is very pleased to introduce LEADTOOLS Version 21. LEADTOOLS has continued to raise the
standard of innovative technologies for 31+ years and there is no end in sight. This release is
highlighted by new libraries and features that are found within LEAD's Recognition, Document, Medical,
Multimedia, and Imaging technologies. Additionally, existing libraries have received an impressive amount of
enhancements and new features…
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LEAD Technologies is partnering with Paliscope, a member of the Safer Society Group, to help scientists and
researchers combat COVID-19. Utilizing LEADTOOLS advanced recognition capabilities within their product YOSE,
Paliscope will be providing free temporary licenses of its product to anyone researching or working on projects
related to COVID-19…
Read more
Innovative Businesses Trust Us




























Development teams love LEADTOOLS

Paliscope
"We started to work with LEADTOOLS to add very powerful OCR functionality to our product. LEADTOOLS has been very supportive and easy to work with during our development allowing us to create an even better product!"
Christian Berg
Founder and CEO
"We have been using LEADTOOLS since the development of our first product version of the dhs Image Database in 1994. We chose LEAD because all our requirements could be covered with one tool. The dhs Image Database has been used worldwide for over 25 years as a modular image management system in the QA and the laboratory area for archiving, recording, processing, anaylsis, and documentation. We started using LEADTOOLS for reading, writing, and visualizing the already extensive number of different image formats. We’ve also started to add in annotations throughout our time using LEADTOOLS we have never experienced any major issues. Their support team has always been informative and quick to help!"
Development Team
"We chose LEADTOOLS Imaging Pro Toolkit because we needed support for all standard image formats including PNG, BMP, and JPEG. Integrating LEADTOOLS within our multi-user viewer, ImageView Standard, has helped elevate our solution to it’s best-in-class status for financial institutions and Fortune 1000 companies."
Yojna Engineering Team
"We selected MiPACS as the anchor solution for Pacific Dental Services 1VU, our modern-day approach to dental image management. With 800+ offices across the US, an enterprise focused imaging solution was a must-have requirement. MiPACS integrates seamlessly with our Practice Management System EPIC, supports the sensor, panoramic and CBCT devices we want to use, and includes a HTML5 zero-footprint web viewer. It gave us confidence that MiPACS is built using the LEADTOOLS Medical Developer Toolkit. LEADTOOLS powers many enterprise applications and solutions, so we knew that MiPACS had a solid foundation backed by technology that would solve our current and future needs."
David Baker
SVP Chief Information and Digital Officer

InnerActive
"We needed high quality OCR libraries and text extraction for various file types. LEADTOOLS proved to be the perfect fit for our application, and the support team is outstanding."
Win Worcester
Lead Developer

page one GmbH
"As a solution provider, we always want the best for our customers. Thanks to the LEADTOOLS SDK modules, we were able to expand our solution quickly and easily to include functions such as barcode recognition."
Christian Eder
Head of Software Projects
"We have used LEADTOOLS Imaging Pro Developer Toolkit for more than 20 years. The library is working fast and reliable. For so many years we have experienced no major issues. And this is important as rendering and image processing is a core function of the Document Management system that we provide to our customers."
Markus Koelmans
Vice President Research & Development and Quality
“As a long-time customer of LEADTOOLS, we’ve been using LEAD’s OCR engine to extract information from incoming faxes to be stored in our database. LEAD’s OCR technology has allowed us to improve our internal workflow and organization of our records.”
David Revell
CIO
“In need of new tools for encoding and decoding MPEG2, MPEG4, WMV, and H.264, we found LEADTOOLS Multimedia SDK. With their robust toolkit and flexible support and sales teams, LEADTOOLS has been integrated within Pipelogix and we’ve been satisfied customers since 2005.”
Jeremy Wagner
President
“Thanks to LEADTOOLS, we were able to easily integrate top-notch Document, OCR, and PDF functionality into our Merge Document Management paperless office solution.”
Kelly Reiman
Business Analyst, R&D
“KS21 Software & Beratung GmbH uses the LEADTOOLS Imaging Pro SDK to capture image documentation on the construction site and to support order planning and order processing. With UNIRENT and LEADTOOLS we found two strong business partners for the implementation of further documentation and processing mechanisms and look forward to future projects with the help of your products.”
Oliver Raepple
Product Management
“eDOC Aviation Solution AG specializes in software solutions for complex technical documentation. Both in our flagship applications ‘eDoc’ for document management and paperless records management and in our solutions for data extraction in special cases, we need a powerful OCR and the ability to read, edit and create PDF. LEADTOOLS provides a high-performance and reliable library with a modern API for this purpose.”
Development Team
At Computer konkret AG we develop user-friendly, efficient and reliable billing and diagnostics software for dentist and orthodontist practices of all sizes. For years we have relied on LEADTOOLS for image presentation, processing, and the ability to import data in various formats and from various devices. This is essential for our users to efficiently access images and diagnostic data every day. LEADTOOLS meets all of our requirements for functionality, continuity, and stability. Together with UNIRENT, we solve customer problems quickly and directly. With LEADTOOLS constant further development, we are confident that we will continue to find a solution for every requirement that we have in the future.
Development Team
“Using LEADTOOLS Document SDK we were able to quickly develop a customized scanning application to handle the large quantity of files our employees process, store, and transfer daily.”
Andrew Bush
Developer
"We have leveraged the LEADTOOLS Document and PDF toolkits within our records management software for many years. The quality of both their components and their customer relationship team really sets them apart from other vendors."
David Hall
Poject Supervisor
"Our eDiscovery software needs to be able to process, extract and store data from thousands of sensitive client files. LEADTOOLS Document and OCR libraries have been invaluable to our development team since 2009"
Chris Waterman
Director of Software Development
"Integrating LEADTOOLS OCR and Recognition libraries into our scanning solutions have given our developers truly powerful technology and access to a reliable customer support team."
Torin Ford
Senior Software Engineer
"Making the decision to integrate LEADTOOLS was easy because of their reliable and convenient DICOM libraries. Their intuitive API helped us shrink our development time and hit our deadlines. The code samples provided on their website are extremely helpful, and to back it up they also have direct technical support to help answer any other questions."
J.W. Chang
Engineer

BMedley.org
"The LEADTOOLS SDK's high-level interface is a joy to work with and works on Linux when I develop on Mac!"
Brian Medley
Developer
"LEADTOOLS has been integrated within our document management platform, VirPack, for over 20 years. LEAD’s document conversion and annotation libraries allowed our development team to hit the ground running when building and optimizing the virtual file and workflow automation capabilities that our product provides."
Michael J. Coar Jr.
CEO
"We have been using LEADTOOLS development toolkits for over 15 years. Their customer support and development teams have been extremely responsive to all of our technical needs. Their DICOM capabilities have ensured our ability to provide DICOM communications services for our application, and has been able to help us expand our DICOM feature set over the years."
Tony Molinari
Vice President
"After difficulties using other tools, we were in the market for DICOM libraries from a trusted company, supported by high quality technical support, and rich in features and functionality. LEADTOOLS solved all of our problems with their Medical SDK and they provided us with excellent customer service!"
Mr. S. K. Lee
Head of Software

LG Electronics
“To achieve DICOM compliant interoperability between our PACS server, MWL server, and other DICOM devices and services, we chose LEAD for their well-known and trusted LEADTOOLS DICOM libraries. I highly recommend LEADTOOLS for establishing interoperability with DICOM medical devices and equipment.”
Mr. J. W. Park
LG Electronics