PDF Toolkit

PDF Toolkit is a Python application that provides both a graphical user interface (GUI) and a command-line interface (CLI) for performing various operations on PDF files. These operations include editing metadata, extracting pages and images, merging PDFs, and creating PDFs from images.

Features

• PDF File Operations: Load and save PDF files.
• Metadata Editor: View and edit PDF metadata fields such as Title, Author, Subject, Keywords, Creator, Producer, Creation Date, and Modification Date.
• Save and Load Metadata: Save metadata to a JSON file and load metadata from a JSON file.
• Page Operations: Extract specific pages from a PDF file and save them as a new PDF.
• Image Operations: Extract images from a PDF file and save them to a specified directory.
• PDF Merging: Combine multiple PDF files into a single document.
• Image to PDF Conversion: Convert image files to PDF with customizable page settings.
• Drag and Drop: Drag and drop PDF files directly into the application for easy loading.
• Window Centering: The application window opens centered on the screen.
• CLI Interface: Use all features via command-line for batch operations.

Requirements

• Python 3.7+
• PyPDF2 library
• tkinterdnd2 library
• pillow library

You can install the required library using the following command:

pip install -r requirements.txt

Usage

Running the Application (GUI)

To launch the graphical user interface, execute the following command:

python pdftoolkit.py

Command-Line Interface (CLI)

The PDF Toolkit CLI supports various operations on PDF files. Below are some usage examples:

Read PDF Metadata

pdftoolkit_cli.py read example.pdf

This command reads the metadata of the specified PDF file.

Validate a PDF File

pdftoolkit_cli.py validate example.pdf

This command checks whether the provided PDF file is valid.

Extract Specific Pages

pdftoolkit_cli.py extract-pages example.pdf "1-3,5" extracted.pdf

Extracts pages 1-3 and page 5 from the PDF and saves them to a new file.

Merge Multiple PDFs

pdftoolkit_cli.py merge file1.pdf file2.pdf merged.pdf

Merges the listed PDF files into a single PDF.

Create a PDF from Images

You can specify margins either individually or as a sequence of four values.

Using Individual Margin Arguments:

pdftoolkit_cli.py create-from-images img1.jpg img2.png output.pdf \
    --margin-left 0 --margin-right 0 --margin-top 0 --margin-bottom 0 \
    --page-size A4 --orientation portrait --scaling "scale to fit"

Using Sequential Margin Values:

pdftoolkit_cli.py create-from-images img1.jpg img2.png output.pdf \
    --margins 0 0 0 0 --page-size A4 --orientation portrait --scaling 1

Default margin values (left, right, top, bottom) are 10.

The --scaling option accepts both text values (e.g., "scale to fit", "stretch to fit", "actual size", "stretch to fill") and integer values (1-4) mapping to these options.

User Interface

The following image shows the graphical user interface of the PDF Toolkit: