COT

Crossplatform OCR Translation tool COT for translating text on your screen.

Currently supports DeepL and LibreTranslate as translation APIs, and Tesseract as an OCR engine.

Demonstration

Features 2 modes:

• Notification
  Uses native notifications to show the translation.
  Ideal for translating small phrases and separate words.

• TextBox
  Prints translated text near your selection.
  Ideal for translating big chunks of text.

Requirements

• Java 21+
• Network connection

Installation

1. Download the latest archive from the Releases tab and extract the contents.
2. Download .traineddata files for Tesseract for the languages you are going to translate:
   Fast versions
   Default versions
   And put them in ocrdata/tessdata/
3. Get your DeepL or Libre API key:
   DeepL
   Libre (no free plan)
4. Paste your key in the corresponding file:
   api/Deepl/key.txt
api/Libre/key.txt
5. Run the .jar executable in the root folder.
6. Set your preferred input and output languages, presentation mode and translator(DeepL by default).
7. Use Ctrl + Shift + C to select a region you want to translate.

Note: If you use TextBox mode or encounter some error, use the shortcut to hide the selection overlay

Shortcut

You can change the shortcut by editing the assets/shortcut.txt file.

Currently known problems

• Tesseract may fail to read selected text.
• Tesseract may recognise abstract shapes as characters.

These can not be fully fixed.

Acknowledgements

This project uses JNativeHook, Tess4J, DeepL Java Library.