The simplest EPUB file is converted to the PDF file method to use the e -book management tool Calibre, but Calibre needs to add the file to the library to change it. When it is added to the library Essence There is an EPUB file editing tool The Calibre E-Book Editor in the Calibre tool kit. Using this tool can export the resource files in the EPUB file to the local directory. After the local directory is exported to the local directory, you can use the Python package PDFKIT to PDF file.

The above method requires three preparations:

1. Install the WKHTMLTOPDF tool, PDFKIT packaged this tool. Download the installation method to ask Du Niang.

2. Use The Calibre E-Book Editor to replace the references of the html file in the EPUB file in the absolute path. As shown below:

The replacement path in the figure is FILE: /// represents the protocol. E:/Book is the directory where the resource in the EPUB file will be exported. The typical structure of the directory after exporting resource files is as follows:

Among them, the image and other resources are saved in the Images folder, and the HTML file is saved in the Text folder.

3. Install PDFKIT package: PIP Install PDFKIT

After completing the above preparation work, we can use PDFKIT to convert the HTML file in the Text folder into a PDF file:

import pdfkit
from pathlib import Path


input_path = Path(r"E:\book\text")
output_path = r'E:\book'
#Specify the installation path of WKHTMLTOPDF, or add wkhtmltopdf.exe to the PATH environment variable
config_pdf = pdfkit.configuration(wkhtmltopdf=r'd:\programs\wkhtmltopdf\bin\wkhtmltopdf.exe')

options ={
    'encoding':'UTF-8',
    'page-size':'A4',
    'margin-top':'0.75in',
    'margin-right':'0.75in',
    'margin-bottom':'0.75in',
    'margin-left':'0.75in',
    'no-outline':False,
         #Allow wkhtmltopdf.exe to access local resources
    'enable-local-file-access': True
}


input_files = list(str(o) for o in input_path.glob("*.html"))

pdfkit.from_file(input = input_files,
                                           OUTPUT_PATH = OUTPUT_PATH + '\\ PDF file name.pdf',
                     options=options,configuration=config_pdf)

print('Done!')

In the above code, the 'Enable-Local-File-ACcess' option is FALSE by default. Do not modify it during conversion.

OSError: wkhtmltopdf reported an error:
Exit with code 1 due to network error: ProtocolUnknownError