In this article, we will explore how to batch combine thousands of PDF and JPEG files based on their sequential filenames. This process is essential when dealing with large sets of documents, and it can save time and effort compared to combining files individually. We will cover key concepts, provide examples, and offer references for further learning.
Background
Combining multiple files into a single document is a common task in various industries, such as publishing, education, and research. When dealing with large sets of PDF or JPEG files, it's important to automate the process to save time and effort. In this article, we will focus on combining files based on their sequential filenames using a simple script.
Combining PDF Files
To combine PDF files, we can use a library like PyPDF2 in Python. Here's an example of how to combine all PDF files with sequential filenames in a directory:
import os
import PyPDF2
def merge_pdfs(source_directory):
pdfs = [os.path.join(source_directory, f) for f in os.listdir(source_directory) if f.endswith(".pdf")]
output_filename = "combined.pdf"
output_file = open(output_filename, "wb")
writer = PyPDF2.PdfFileWriter()
for pdf_file in pdfs:
file_object = open(pdf_file, "rb")
reader = PyPDF2.PdfFileReader(file_object)
for page in range(reader.numPages):
writer.addPage(reader.getPage(page))
file_object.close()
writer.write(output_file)
output_file.close()
Combining JPEG Files
To combine JPEG files, we can use a library like Pillow in Python. Here's an example of how to combine all JPEG files with sequential filenames in a directory:
import os
from PIL import Image
def merge_images(source_directory):
images = [os.path.join(source_directory, f) for f in os.listdir(source_directory) if f.endswith(".jpg")]
output_filename = "combined.jpg"
output_image = Image.new("RGB", (sum([img.width for img in Image.open(f) for f in images]), sum([img.height for img in Image.open(f) for f in images])))
for image_file in images:
img = Image.open(image_file)
x, y = img.size
output_image.paste(img, (sum([w for w in output_image.size[0] for _ in range(x)]) + (x // 2), sum([h for h in output_image.size[1] for _ in range(y)]) + (y // 2)))
img.close()
output_image.save(output_filename)
In this article, we covered how to batch combine PDF and JPEG files based on their sequential filenames using Python scripts and popular libraries like PyPDF2 and Pillow. These techniques can save time and effort when dealing with large sets of documents.