Page Comparison

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• PDF: Select this file when you wish to print out the pages or to read the book on your computer.

  • Details: This file format can be opened in your browser or a dedicated PDF viewer, such as Adobe Reader. The scanned page images are embedded within the file, as well as the plain text OCR that accompanies each page.

• EPUB: Select this file when you wish to read the book on your mobile device or eReader.

  • Details: This file is created from automatically generated OCR, which may contain errors, misspellings, or nonsense characters. You cannot open this file format on a computer unless you have installed an EPUB reader. EPUBs are compatible with many eReaders, such as Nook or Kobo, but are not compatible with Kindle eReaders. To convert to a format compatible with Kindle or open EPUB files on your computer, you will need to use conversion or EPUB display software such as Calibre.

• Text (.txt): Select this file when you wish to work with or read the text of the book in a text editor or in word processing software.

  • Details: This file is created from automatically generated OCR, which may contain errors, misspellings, or nonsense characters. The OCR for the entire book or selected pages are compiled together into one file. You can open this file with your computer’s default text editor, such as Notepad or TextEdit, or open it in other text software, such as Microsoft Word.

• Text (.zip): Select this file when you wish to do text mining or data analysis with the book.

  • Details: This file is created from automatically generated OCR, which may contain errors, misspellings, or nonsense characters. The OCR is provided as individual .txt page files for the pages you have selected and zipped together into a package.

• Image (JPEG) or Image (TIFF): Select this file one of these files when you want to view the scanned images associated with a book.

  • Details: The images provided are lower resolution versions of the images we received from the contributor. Watermarks are added to the bottom of the image. Each book page is provided as a separate image file.

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