Convert Images to PDFs using Tkinter

Python is a scripting language that helps create various file converters. Using the img2pdf module and Tkinter, we can build a GUI application that converts multiple images into PDF format. The img2pdf library efficiently parses image data and converts it to PDF without quality loss.

Installation

First, install the required module ?

pip install img2pdf

Building the Image to PDF Converter

We will create a Tkinter application with file selection dialog and conversion functionality ?

from tkinter import *
from tkinter import filedialog, messagebox
from tkinter import ttk
import img2pdf
import os

# Create main window
win = Tk()
win.geometry('750x300')
win.title("Image to PDF Converter")

# Global variable to store selected images
images = []

def select_files():
    global images
    images = filedialog.askopenfilenames(
        title="Select Image Files",
        filetypes=[("Image files", "*.jpg *.jpeg *.png *.bmp *.tiff")]
    )
    
    if images:
        file_label.config(text=f"Selected {len(images)} image(s)")
    else:
        file_label.config(text="No files selected")

def convert_to_pdf():
    if not images:
        messagebox.showerror("Error", "Please select image files first!")
        return
    
    try:
        # Ask user where to save the PDF
        output_path = filedialog.asksaveasfilename(
            title="Save PDF as",
            defaultextension=".pdf",
            filetypes=[("PDF files", "*.pdf")]
        )
        
        if output_path:
            # Convert images to PDF
            with open(output_path, "wb") as pdf_file:
                pdf_file.write(img2pdf.convert(images))
            
            messagebox.showinfo("Success", f"PDF saved as {os.path.basename(output_path)}")
            status_label.config(text="Conversion completed successfully!")
        
    except Exception as e:
        messagebox.showerror("Error", f"Conversion failed: {str(e)}")

# Create GUI elements
title_label = Label(win, text="Image to PDF Converter", font=("Arial", 20, "bold"))
title_label.pack(pady=20)

select_btn = ttk.Button(win, text="Select Images", command=select_files)
select_btn.pack(pady=10)

file_label = Label(win, text="No files selected", fg="gray")
file_label.pack(pady=5)

convert_btn = ttk.Button(win, text="Convert to PDF", command=convert_to_pdf)
convert_btn.pack(pady=10)

status_label = Label(win, text="", fg="green")
status_label.pack(pady=10)

win.mainloop()

Key Features

• File Selection: Users can select multiple image files using a dialog box
• Format Support: Supports common image formats like JPG, PNG, BMP, TIFF
• Save Dialog: Allows users to choose where to save the output PDF
• Error Handling: Displays helpful error messages for common issues
• Status Updates: Shows feedback about selected files and conversion status

How It Works

The application works in these steps:

1. File Selection: filedialog.askopenfilenames() opens a dialog to select multiple images
2. Validation: The app checks if files are selected before conversion
3. Save Location: filedialog.asksaveasfilename() lets users choose where to save the PDF
4. Conversion: img2pdf.convert() converts all selected images into a single PDF
5. Feedback: Success or error messages are displayed using messagebox

Conclusion

This Tkinter application provides an easy way to convert multiple images into a single PDF file. The img2pdf library ensures high-quality conversion while the GUI makes it user-friendly for non-programmers.