Offline Barcode & QR Generator

import tkinter as tk

from tkinter import filedialog, messagebox

from PIL import Image, ImageTk

import qrcode

from pyzbar.pyzbar import decode

import os

# ----------------------------------------

# MAIN APP

# ----------------------------------------

class BarcodeQRApp:

    def __init__(self, root):

        self.root = root

        self.root.title("Offline Barcode & QR Suite")

        self.root.geometry("520x520")

        self.build_ui()

    def build_ui(self):

        tk.Label(self.root, text="Barcode & QR Generator / Reader",

                 font=("Arial", 16, "bold")).pack(pady=10)

        self.text_entry = tk.Entry(self.root, width=45)

        self.text_entry.pack(pady=5)

        self.text_entry.insert(0, "Enter text or URL")

        tk.Button(self.root, text="Generate QR Code",

                  command=self.generate_qr).pack(pady=5)

        tk.Button(self.root, text="Read QR / Barcode from Image",

                  command=self.read_code).pack(pady=5)

        self.image_label = tk.Label(self.root)

        self.image_label.pack(pady=10)

        self.result_label = tk.Label(self.root, text="", wraplength=480)

        self.result_label.pack(pady=10)

    # ----------------------------------------

    # Generate QR

    # ----------------------------------------

    def generate_qr(self):

        text = self.text_entry.get().strip()

        if not text:

            messagebox.showerror("Error", "Enter some text!")

            return

        qr = qrcode.make(text)

        file = filedialog.asksaveasfilename(

            defaultextension=".png",

            filetypes=[("PNG Image", "*.png")]

        )

        if file:

            qr.save(file)

            self.display_image(file)

            messagebox.showinfo("Saved", f"QR saved at:\n{file}")

    # ----------------------------------------

    # Read QR / Barcode

    # ----------------------------------------

    def read_code(self):

        file = filedialog.askopenfilename(

            filetypes=[("Image Files", "*.png *.jpg *.jpeg")]

        )

        if not file:

            return

        img = Image.open(file)

        self.display_image(file)

        decoded = decode(img)

        if not decoded:

            self.result_label.config(text=" No QR or Barcode detected.")

            return

        result_text = ""

        for d in decoded:

            result_text += f"""

Type: {d.type}

Data: {d.data.decode('utf-8')}

---------------------

"""

        self.result_label.config(text=result_text)

    # ----------------------------------------

    # Display image

    # ----------------------------------------

    def display_image(self, path):

        img = Image.open(path)

        img.thumbnail((250, 250))

        self.tk_img = ImageTk.PhotoImage(img)

        self.image_label.config(image=self.tk_img)

# ----------------------------------------

# RUN

# ----------------------------------------

if __name__ == "__main__":

    root = tk.Tk()

    app = BarcodeQRApp(root)

    root.mainloop()