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How to Scrape all PDF files in a Website?
  • Last Updated : 12 Apr, 2021

Prerequisites: Implementing Web Scraping in Python with BeautifulSoup

Web Scraping is a method of extracting data from the website and use that data for other uses. There are several libraries and modules for doing web scraping in Python.  In this article, we’ll learn how to scrape the PDF files from the website with the help of beautifulsoup, which is one of the best web scraping modules in python, and the requests module for the GET requests. Also, for getting more information about the PDF file, we use PyPDF2 module.

Step by Step Code –

Step 1: Import all the important modules and packages.

Python3






# for get the pdf files or url
import requests
  
# for tree traversal scraping in webpage
from bs4 import BeautifulSoup
  
# for input and output operations
import io
  
# For getting information about the pdfs
from PyPDF2 import PdfFileReader

Step 2: Passing the URL and make an HTML parser with the help of BeautifulSoup.

Python3




# website to scrap
  
# get the url from requests get method
read = requests.get(url)
  
# full html content 
html_content = read.content
  
# Parse the html content 
soup = BeautifulSoup(html_content, "html.parser")

In the above code:

  • Scraping is done by the https://www.geeksforgeeks.org/how-to-extract-pdf-tables-in-python/ link
  • requests module is used for making get request
  • read.content is used to go through all the HTML code. Printing will output the source code of the web page.
  • soup is having HTML content and used to parse the HTML

Step 3: We need to traverse through the PDFs from the website.

Python3




# created an empty list for putting the pdfs 
list_of_pdf = set()
  
# accessed the fist p tag in the html 
l = soup.find('p'
  
# accessed all the anchors tag from given p tag
p = l.find_all('a'
  
# iterate through p for getting all the href links
for link in p: 
      
    # original html links
    print("links: ", link.get('href'))
    print("\n")
      
    # converting the extention from .html to .pdf
    pdf_link = (link.get('href')[:-5]) + ".pdf"
      
    # converted to .pdf
    print("converted pdf links: ", pdf_link)
    print("\n")
      
    # added all the pdf links to set
    list_of_pdf.add(pdf_link)

Output:

In the above code:



  • list_of_pdf is an empty set created for adding all the PDF files from the web page. Set is used because it never repeats the same-named elements. And automatically get rid of duplicates.
  • Iteration is done within all the links converting the .HTML to .pdf. It is done as the PDF name and HTML name has an only difference in the format, the rest all are same.
  • We use the set because we need to get rid of duplicate names. The list can also be used and instead of add, we append all the PDFs.

Step 4: Create info function with pypdf2 module for getting all the required information of the pdf.

Python3




def info(pdf_path):
  
    # used get method to get the pdf file
    response = requests.get(pdf_path)
  
    # responce.content generate binay code for
    # string function
    with io.BytesIO(response.content) as f:
  
        # initialized the pdf
        pdf = PdfFileReader(f)
  
        # all info about pdf
        information = pdf.getDocumentInfo()
        number_of_pages = pdf.getNumPages()
  
    txt = f"""
    Information about {pdf_path}: 
      
    Author: {information.author}
    Creator: {information.creator}
    Producer: {information.producer}
    Subject: {information.subject}
    Title: {information.title}
    Number of pages: {number_of_pages}
    """
    print(txt)
      
    return information

In the above code:

  • Info function is responsible for giving all the required scraped output inside of the PDF.
  • io.BytesIO(response.content) – It is used because response.content is a binary code and the requests library is quite low leveled and generally compiled (not interpreted). So to handle byte, io.BytesIO is used.
  • There are several pypdfs2 functions to access different data in pdf.

Note: Refer Working with PDF files in Python for detailed information.

Python3




# print all the content of pdf in the console
for i in list_of_pdf:
    info(i)

Complete Code:

Python3




import requests
from bs4 import BeautifulSoup
import io
from PyPDF2 import PdfFileReader
  
  
read = requests.get(url)
html_content = read.content
soup = BeautifulSoup(html_content, "html.parser")
  
list_of_pdf = set()
l = soup.find('p')
p = l.find_all('a')
  
for link in (p):
    pdf_link = (link.get('href')[:-5]) + ".pdf"
    print(pdf_link)
    list_of_pdf.add(pdf_link)
  
def info(pdf_path):
    response = requests.get(pdf_path)
      
    with io.BytesIO(response.content) as f:
        pdf = PdfFileReader(f)
        information = pdf.getDocumentInfo()
        number_of_pages = pdf.getNumPages()
  
    txt = f"""
    Information about {pdf_path}: 
  
    Author: {information.author}
    Creator: {information.creator}
    Producer: {information.producer}
    Subject: {information.subject}
    Title: {information.title}
    Number of pages: {number_of_pages}
    """
    print(txt)
    return information
  
  
for i in list_of_pdf:
    info(i)

Output:

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