Image renameing tool from alphabetical order to numerical order

Here you can slect a particular image or whole folder to rename them in numerical order from alphabetical order.

Source code:

import os

import tkinter as tk

from tkinter import filedialog, messagebox, ttk

class PhotoRenamer:

    def _init_(self, root):

        self.root = root

        self.root.title("Student Photo Serial Renamer (2026)")

        self.root.geometry("600x400")

       

        self.selected_files = [] # Stores full paths of images to rename

        self.start_num_var = tk.StringVar(value="1")

       

        self.create_widgets()

    def create_widgets(self):

        main_frame = ttk.Frame(self.root, padding="20")

        main_frame.pack(fill="both", expand=True)

        # 1. Selection Buttons

        ttk.Label(main_frame, text="1. Choose Your Photos:", font=('Helvetica', 10, 'bold')).grid(row=0, column=0, sticky="w", pady=5)

       

        btn_frame = ttk.Frame(main_frame)

        btn_frame.grid(row=1, column=0, columnspan=2, sticky="w")

       

        ttk.Button(btn_frame, text="Select Folder (All JPGs)", command=self.browse_folder).pack(side="left", padx=5)

        ttk.Button(btn_frame, text="Select Specific Images", command=self.browse_images).pack(side="left", padx=5)

        # 2. File List Display

        ttk.Label(main_frame, text="Selected Files:").grid(row=2, column=0, sticky="w", pady=(15, 5))

        self.file_listbox = tk.Listbox(main_frame, height=8, width=70)

        self.file_listbox.grid(row=3, column=0, columnspan=2, sticky="ew")

        # 3. Rename Settings

        settings_frame = ttk.Frame(main_frame)

        settings_frame.grid(row=4, column=0, sticky="w", pady=15)

       

        ttk.Label(settings_frame, text="Starting Serial Number:").pack(side="left")

        ttk.Entry(settings_frame, textvariable=self.start_num_var, width=10).pack(side="left", padx=10)

        # 4. Action Button

        self.run_btn = ttk.Button(main_frame, text="RENAME NOW", command=self.start_renaming, state="disabled")

        self.run_btn.grid(row=5, column=0, columnspan=2, pady=10)

    def update_listbox(self):

        self.file_listbox.delete(0, tk.END)

        # Sort files alphabetically by their filename (not full path) before displaying

        self.selected_files.sort(key=lambda x: os.path.basename(x).lower())

       

        for f in self.selected_files:

            self.file_listbox.insert(tk.END, os.path.basename(f))

       

        if self.selected_files:

            self.run_btn.config(state="normal")

        else:

            self.run_btn.config(state="disabled")

    def browse_folder(self):

        folder = filedialog.askdirectory()

        if folder:

            # Get all JPG/JPEG files from that folder

            self.selected_files = [os.path.join(folder, f) for f in os.listdir(folder)

                                   if f.lower().endswith(('.jpg', '.jpeg'))]

            self.update_listbox()

    def browse_images(self):

        files = filedialog.askopenfilenames(filetypes=[("Image files", "*.jpg *.jpeg")])

        if files:

            self.selected_files = list(files)

            self.update_listbox()

    def start_renaming(self):

        try:

            start_num = int(self.start_num_var.get())

        except ValueError:

            messagebox.showerror("Error", "Please enter a valid starting number.")

            return

        if not messagebox.askyesno("Confirm", f"Rename {len(self.selected_files)} images?"):

            return

        success_count = 0

        try:

            # Use a temporary list to avoid conflicts during renaming

            for index, old_path in enumerate(self.selected_files):

                directory = os.path.dirname(old_path)

                extension = os.path.splitext(old_path)[1]

               

                # Create the new filename (e.g., 1.jpg, 2.jpg)

                # Tip: use f"{start_num + index:03}{extension}" for leading zeros (001, 002)

                new_filename = f"{start_num + index}{extension}"

                new_path = os.path.join(directory, new_filename)

                # Rename the file

                os.rename(old_path, new_path)

                success_count += 1

            messagebox.showinfo("Done", f"Successfully renamed {success_count} images!")

            self.selected_files = [] # Clear list after completion

            self.update_listbox()

           

        except Exception as e:

            messagebox.showerror("System Error", f"Failed to rename: {e}")

if __name__ == "_main_":

    root = tk.Tk()

    app = PhotoRenamer(root)

    root.mainloop()