This program will convert images stored in the clipboard to texts using tesseract ocr engine.

It is written in b4j and tesseract is open sourced, thus it is cross-platform.

tesseract and jre8 are needed to run this program.

See here for tesseract installation.

I would like to run a portable tessract in windows. So if there is tesseract in the path, it will use the tesseract installed in the system. If not, it will run the tesseract I put under the app's root.

If tesseractInstalled Then
    sh1.Initialize("sh1","tesseract",args)
Else
    sh1.Initialize("sh1",File.Combine(File.Combine(File.DirApp,"tesseract-ocr"),"tesseract"),args)
End If 

We can use operating systems' built-in screencapture shortcuts to get images into the clipboard.

Windows 10: win+shift+s

macOS: Command+shift+4

Linux: Ctrl+Shift+PrntScrn (It may differ based on different desktop environments)