Invoice Recognition and Processing SDK Libraries

LEADTOOLS includes advanced, flexible invoice and unstructured forms recognition and processing SDK technology with support for complex and dynamic tabular data found on invoices, bills, and tabs. The state-of-the-art .NET 6+, .NET Framework, .NET MAUI, Xamarin, UWP, C#, VB, and Java libraries in LEADTOOLS are capable of detecting and extracting text and numerical information from fluctuating columns and rows even when the invoice spans across multiple pages. LEADTOOLS is an indispensable toolkit for any programmer creating automated accounting, billing, and invoicing solutions.

Feature-rich Invoice Recognition and Processing SDK

AI-Powered Invoice Recognition and Processing Libraries

The artificial intelligence and machine learning that power LEADTOOLS invoice recognition and processing libraries automatically detect and extract data from unstructured forms, including invoices, bills, and receipts. With these libraries, your solutions will effortlessly find and extract data from tables, fields, and line items.

  • Item numbers
  • Descriptions
  • Quantity
  • Price
  • Tax
  • Sub-total

LEAD's invoice recognition and processing API handle multipage forms, even when tables span across multiple pages. The state-of-the-art form alignment algorithm compensates for non-linear deformations introduced by different scanners, printers, and resolutions.

Versatile and robust Invoice Recognition and Processing Libraries

Unparalleled Invoice Capture Accuracy

LEADTOOLS invoice processing API provides unparalleled accuracy by utilizing additional LEADTOOLS technologies such as:

  • Automatic image preprocessing cleanup
  • Spelling dictionaries for multiple languages in the same document
  • Font recognition
  • Automatic image segmentation

Process your unstructured forms with confidence knowing that LEADTOOLS libraries will return accurate results and maintain document artifacts such as tables, images, signatures, and OMR fields. The library provides comprehensive confidence reporting for each invoice field type and includes character location, size, and baseline, font properties, and confidence values of accuracy.

Fast, reliable, and accurate invoice libraries

Unbeatable Speed and Reliability

LEAD is continuously optimizing its invoice processing libraries to ensure that they are as fast and reliable as possible. This makes the API perfect for applications that range from unattended large volume batch invoice processing to converting single and multipage documents with manual review. Because LEADTOOLS has libraries for multiple platforms, these applications can run on mobile devices, workstations, servers, and in the cloud. LEADTOOLS makes the most of the hardware made available to it.

Pre-fined template or no template

Template || No Template: The Choice is Yours

While the LEADTOOLS Invoice Recognition and Processing SDK is intelligent enough to process invoices without a pre-fined master, there are times that recognition should be constrained to specific invoice layouts. To that end, the LEADTOOLS Invoice Recognition and Processing libraries include components that make master template generation quick and easy. Scan in an empty invoice, use the auto-OMR mark detection and bulk field renaming tools, enter any additional information needed, and add the invoice template to the appropriate category/subcategory repository for use.

In depth reporting

Mixed Zone Recognition

Recognizing that automation and efficiency are at the forefront for developers building OCR solutions, LEAD has mixed mode AutoZone capabilities to extract text from images that contain a mix of machine-printed text, handwritten text, MICR, MRZ, OMR, graphics, and table zones. LEADTOOLS automatically detects and recognizes everything. This powerful combination of OCR, ICR, and other advanced recognition technologies is critical for companies that need to quickly and accurately process various form types regardless of how the data is formatted.

Recognize numerous different characters

Extensive Character Set Support

The LEADTOOLS invoice recognition and processing libraries leverage the LEADTOOLS OCR libraries, which can recognize text in more than 40 languages and character sets, including:

Backed by patented OCR algorithms

Powered by Industry-Leading OCR and Forms Recognition

For the past 26 years, LEAD's OCR and Forms Recognition libraries have been used by thousand of developers and millions of end-users throughout the world. The patented machine learning algorithms that drive these engines bring unparalleled accuracy, speed, and reliability to all of the LEADTOOLS recognition libraries, including the Invoice Recognition and Processing API.

Other recognition libraries and components include:

Invoice Recognition and Processing Development Made Easy

Easy to Integrate

LEADTOOLS handles the heavy lifting, eliminating months of R&D, while giving you the best quality and performance available. You'll be free to focus on other components of your application. Download the LEADTOOLS evaluation to streamline your development.

Cross platform libraries

Invoice Recognition and Processing SDK Platforms and Programming Interfaces

Operating Systems

Projects that use LEADTOOLS Invoice Recognition and Processing libraries can be deployed to Windows, Linux, macOS, Android, and iOS devices.


Developers that are leveraging these frameworks can utilize the Invoice Recognition and Processing SDK: .NET 6+, .NET Framework, .NET MAUI, Xamarin, UWP, WinForms, and ASP.NET

Programming, Scripting, Markup

Invoice Recognition and Processing code snippets and demo applications are provided for the following: C#, VB, XAML, and Java

Start Coding with LEADTOOLS Invoice Recognition and Processing

Invoice Recognition and Processing libraries as well as all LEADTOOLS Recognition, Document, Medical, Vector, and Imaging technologies for all development and target platforms, including Windows, Linux, and macOS.

Download LEADTOOLS Libraries