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A .NET wrapper for tesseract-ocr 4.1.1.


Visual Studio 2019 x86 and x64 Runtimes

Since tesseract and leptonica binaries are compiled with Visual Studio 2019 you'll need to ensure you have the Visual Studio 2019 Runtime installed.

Tesseract language data

You will also need to download the language data files for tesseract 4.1.0 from tesseract-ocr.

Getting started quickly

  1. Add the Tesseract NuGet Package by running Install-Package Tesseract from the Package Manager Console.
  2. (Optional) Add the Tesseract.Drawing NuGet package to support interop with System.Drawing in .NET Core, for instance to allow passing Bitmap to Tesseract
  3. Ensure you have Visual Studio 2019 x86 & x64 runtimes installed (see note above).
  4. Download language data files for tesseract 4.00 from the tessdata repository and add them to your project, ensure 'Copy to output directory' is set to Always.
  5. Check out the Samples solution ~/src/Tesseract.Samples.sln in the tesseract-samples repository for a working example.

If you run into any issues please check out this wiki page which details a number common issues and some potential solutions.

Note for contributors

Please create your pull requests to target the "develop" branch. "Master" is only for released code. Thank you.


Copyright 2012-2019 Charles Weld.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this software except in compliance with the License. You may obtain a copy of the License at:

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.


Copyright 2014 Andrey Akinshin Project URL: Distributed under the MIT License:

Core Team


A big thanks to GitHub and all of Tesseract's contributors:

Also thanks to the following projects\resources without which this project would not exist in its current form:

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