How to read single pdf page in ocr at once?

I want to to read whole single pdf page from OCR but if I zoom out in pdf OCR reads wrongly. Is there any other way to read the whole pdf?

You can do it using mouse scroll: you open the pdf, OCR the visible part, then scroll down and OCR another part, and so on till the whole document is processed.

You can then combine the contents using Join strings action, or write it to file.