Image Resizer with a GUI

 import tkinter as tk

from tkinter import filedialog, messagebox

from PIL import Image, ImageTk

def select_image():

    global img, img_path

    img_path = filedialog.askopenfilename(

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

    )

    if not img_path:

        return

    img = Image.open(img_path)

    preview_image(img)

def preview_image(image):

    # Resize for preview

    preview = image.copy()

    preview.thumbnail((300, 300))

    tk_img = ImageTk.PhotoImage(preview)

    img_label.config(image=tk_img)

    img_label.image = tk_img

def resize_image():

    global img, img_path

    if not img_path:

        messagebox.showerror("Error", "No image selected!")

        return

    try:

        new_width = int(width_entry.get())

        new_height = int(height_entry.get())

        resized_img = img.resize((new_width, new_height))

        

        save_path = filedialog.asksaveasfilename(

            defaultextension=".png",

            filetypes=[("PNG files", "*.png"), ("JPEG files", "*.jpg"), ("All files", "*.*")]

        )

        if save_path:

            resized_img.save(save_path)

            messagebox.showinfo("Success", f"Image saved to {save_path}")

    except ValueError:

        messagebox.showerror("Error", "Please enter valid width and height values!")

    except Exception as e:

        messagebox.showerror("Error", f"An error occurred: {str(e)}")

# GUI Setup

root = tk.Tk()

root.title("Image Resizer")

frame = tk.Frame(root)

frame.pack(pady=10)

# Image Preview

img_label = tk.Label(frame)

img_label.pack()

# Select Image Button

select_btn = tk.Button(root, text="Select Image", command=select_image)

select_btn.pack(pady=5)

# Input Fields for Width and Height

size_frame = tk.Frame(root)

size_frame.pack(pady=5)

tk.Label(size_frame, text="Width: ").grid(row=0, column=0, padx=5)

width_entry = tk.Entry(size_frame, width=10)

width_entry.grid(row=0, column=1, padx=5)

tk.Label(size_frame, text="Height: ").grid(row=0, column=2, padx=5)

height_entry = tk.Entry(size_frame, width=10)

height_entry.grid(row=0, column=3, padx=5)

# Resize Button

resize_btn = tk.Button(root, text="Resize and Save", command=resize_image)

resize_btn.pack(pady=10)

root.mainloop()