How to combine PDF files into a big one on a PC?

Using Python with PyPDF2 is a script-based, offline solution that allows you to combine pdf pages without a graphical PDF editor and automate batch PDF merging tasks; however, this requires a local installation of Python and basic programming knowledge.

It allows you to process dozens of PDF files in a single batch, but to use this feature, you’ll need to manually write and modify Python code.

First, install Python on your computer, then run the following command in the terminal:

pip install PyPDF2

to install the PDF processing library. Open a text editor, create a new Python script file, and paste the following code into it:

import PyPDF2

merger = PyPDF2.PdfMerger()
for pdf in ["file1.pdf", "file2.pdf", "file3.pdf"]:
    merger.append(pdf)
merger.write("merged.pdf")
merger.close()

Replace the PDF filename in the code with your target local file, save the script, then run the file from the terminal and wait for the merged .pdf output file to be generated.

Once the script has finished running, you can open the newly combine pdf pages to check all the merged pages.

If you don’t want to download graphical PDF software, you can try this method, but it requires basic programming skills, so you should prepare and test the script carefully.