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3.6K Stars 1.4K Forks Apache License 2.0 374 Commits 0 Opened issues


Fork of Tesseract Tools for Android

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Please consider trying one of the forks of this project such as


A fork of Tesseract Tools for Android (tesseract-android-tools) that adds some additional functions. Tesseract Tools for Android is a set of Android APIs and build files for the Tesseract OCR and Leptonica image processing libraries.

This project works with:

  • Tesseract 3.05
  • Leptonica 1.74.1
  • libjpeg 9b
  • libpng 1.6.25

The source code for these dependencies is included within the



module contains tools for compiling the Tesseract and Leptonica libraries for use on the Android platform. It provides a Java API for accessing natively-compiled Tesseract and Leptonica APIs.


module contains additional image processing code copied from the eyes-free project. It includes native functions for text detection, blur detection, optical flow detection, and thresholding. Eyes-two is not needed for using the Tesseract or Leptonica APIs.


module contains instrumented unit tests for tess-two.


  • Android 2.3 or higher
  • A v3.04 trained data file for a language. Data files must be copied to the Android device in a subdirectory named


To use tess-two from your app, edit your app module's

file to add tess-two as an external dependency:
dependencies {
    implementation 'com.rmtheis:tess-two:9.1.0'

Javadoc is available.


If you want to modify the tess-two code, or you want to use the eyes-two module, you may build the project yourself locally. See


Release points are tagged with version numbers. A change to the major version number indicates an API change making that version incompatible with previous versions.

The change log shows what's new in each version.


  • Stack Overflow:
  • tesseract-ocr:!forum/tesseract-ocr


Copyright 2011 Robert Theis

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file 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.

See Also

The Google Mobile Vision API team has made available an OCR capability that is provided to developers through the Google Play Services library: The Mobile Vision API offers a simple API for OCR that currently works for Latin-based characters.

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