I want to make a study app

[nishyanthkumar]

@Md_Mamun

ocr scanner that scan textbook

You can use Marco's OCR extension, or you can follow TIMAI2's tutorial on using Google Docs' OCR capabilities:

HOWTO: OCR Images and PDFs using Google Docs

Image with text [lorem] OCR output [googleocroutput2] This guide, which was lost for a couple of years, has been revived and updated. provides for the optical character recognition of text on images (also from device camera) and in pdfs, using a google web app and google docs. OCR Images and PDFs using Google Docs

I did not understand exactly what you want to do.