Bulk File Renamer

A Windows GUI tool for bulk file renaming. Combine multiple rules — find/replace, multi-pair find/replace, prefix, suffix, sequential numbering, and case conversion — in a single pass. Bilingual UI (Turkish / English), dark mode, rule profiles, drag-and-drop, and more.

Screenshot

Features

Renaming rules (combine freely)

• Find & Replace — literal or regex
• Multi Find/Replace — hundreds of pairs, one per line (oldName newName)
• Prefix / Suffix — prepend / append text (suffix goes before the extension)
• Sequential Numbering — photo001, photo002, ... (base name + start + padding)
• Case Conversion — lower / UPPER / Title Case

Workflow

• Preview with color-coded status (green = OK, red = conflict, orange = excluded)
• Exclude rows from the preview (double-click, Space, or Delete key)
• Safe two-phase rename — a ↔ b swaps work correctly
• Undo — revert the last operation
• Recursive subfolder traversal
• Extension filter (e.g. .jpg,.png)
• Sorting — by name, modified date, or size (asc/desc)

Quality of life

• Light / Dark theme — switchable at runtime
• Bilingual UI — Turkish and English
• Drag & drop — drop a folder onto the window
• Recent folders — last 10 folders in a dropdown
• Rule profiles — save / load your settings to a .json file
• Keyboard shortcuts — Ctrl+O, Ctrl+P, Ctrl+Enter, Ctrl+Z, Ctrl+S, Ctrl+L, Del, F1
• Tooltips on every button
• About / Contact dialog with clickable links

Installation

Option 1: Prebuilt .exe (recommended)

Download the latest BulkFileRenamer.exe from the Releases page and run it. No Python installation required.

Option 2: Run from source

git clone https://github.com/ayberkbgln/bulk-file-renamer.git
cd bulk-file-renamer
pip install tkinterdnd2   # optional, for drag & drop
python toplu_rename.py

Requires Python 3.8+. Tkinter ships with the standard library. tkinterdnd2 is optional — the app works without it, just without drag-and-drop.

Option 3: Build your own .exe

pip install pyinstaller pillow tkinterdnd2
python make_icon.py
pyinstaller --onefile --windowed --icon=app.ico \
            --add-data "app.ico;." --add-data "icon_256.png;." \
            --collect-all tkinterdnd2 \
            --name "BulkFileRenamer" toplu_rename.py

Keyboard shortcuts

Shortcut	Action
Ctrl+O	Browse folder
Ctrl+P	Preview
Ctrl+Enter	Apply
Ctrl+Z	Undo
Ctrl+S	Save profile
Ctrl+L	Load profile
Del / Space	Exclude selected
F1	About

Multi Find/Replace format

One rule per line:

oldWord newWord
IMG_ Holiday_
DSC_ Photo_
_v1

• Separator: TAB or whitespace (the first run of whitespace is the separator)
• Single token on a line → that text is deleted (the _v1 line strips _v1 from names)
• Lines starting with # are treated as comments and skipped

About / Contact

Developed by Ayberk Bağlan.

• GitHub: github.com/ayberkbgln
• LinkedIn: linkedin.com/in/ayberkbaglan
• X / Twitter: @yulewiz
• Email: ayberkbaglan@gmail.com

Contributing

Issues and pull requests are welcome. Feel free to open an issue for feature requests or bug reports.

License

MIT