Perlego EBook Downloader

For personal use only.

College students that have used Perlego before know that downloading EBooks for offline viewing is not easy. This repository contains scripts that help paying users download their EBooks without hassle.

For the most basic use case (Less than ~200 pages):

1. Open Ebook in a browser (PDF and ePub supported).
2. Go to the page you want to start printing.
3. Open Chrome's developer console via the UI.
4. Paste the content of PerlegoContent.js into the console and press enter.
5. Enter printPages(startPage, endPage) into the console, where startPage is the page number you want to start printing on, and endPage is the page number of the page you want to end on.
6. Wait for the script to finish running, and you should be prompted to save the pdf.
7. If images fail to load, try waiting for them to load, then printing again manually.
8. Refresh the page to go back to Perlego's eReader.

If you want to download an entire textbook, it is recommended that you download the book in sections of around 150 pages to reduce the load on the browser. You could then combine the pdfs together using external tools such as pdfunite.

Please note that PerlegoContent.js does not save the menu(outline) of the pdf, for that you need to use PerlegoOutline.js as described below.

(PDF Only) Procedure for downloading an entire textbook with the menu intact:

1. Download all sections of the Ebook using PerlegoContent.js, make sure you name your pdfs part_1.pdf, part_2.pdf, etc. in the Downloads folder.

2. Make sure you have poppler-utils installed to combine the pdfs, and fntsample installed to add the outline.

3. Run PerlegoOutline.js from the "Table of contents" page of the Ebook (between "Book details" and "Related") in developer console.

4. (optional) You can customise the downloaded outline.txt according to this specification.

5. In the Downloads folder, open a local terminal and run the following commands:

   # Combine the pdfs into one
   pdfunite part_*.pdf temp.pdf
   
   # Add the outline of the pdf
   pdfoutline temp.pdf outline.txt output.pdf
   
   # Clean up
   rm part_*.pdf temp.pdf outline.txt
   

Future: Add support to download ePub books as .epub instead of .pdf.