Use screen capture software to save books opened by LeBook as pictures in jpg format. There are many screen capture softwares, such as FastStone Capture and PicPick, which are excellent products.
Use the Solid PDF tool to convert JPG into a PDF file, and then you can organize it into a PDF ebook.
Use OCR text recognition software, such as ABBYY FineReader and wondershare pdf converter professional edition, to recognize the characters in these JPG/PNG pictures and convert them into WORD files. At this time, you can edit the characters in these books. When Word is saved as a TXT document, it can be opened with Notepad.