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Ant Renamer

Ant Renamer is a free Windows program for changing file and folder names in bulk according to rules you choose.

Place
#19 of 31
Score
5.9
Ant Renamer's website

What Ant Renamer is

Ant Renamer is a free Windows program for changing file and folder names in bulk according to rules you choose. Its actions include changing extensions, replacing or inserting text, moving or deleting characters, enumeration, and changing letter case. It can also build names from MP3 ID3 v1.1 tags, modification dates and times, EXIF information, regular expressions, or a provided list or file. The program changes names only, not file contents. Unicode names, including Japanese, Chinese, and Arabic characters, are supported on NT systems. The interface is available in English and many other languages, including French, German, Japanese, Portuguese, and Tamil. Ant Renamer is free software under the GNU General Public License version 2 or, at the user's option, a later version. Version 2.13.0 is available as an installer or portable ZIP package. The project began in 2003 and is still maintained, though its maker says it relies on older tools and does not use newer Windows features. The maker provides help files, online manuals, a forum, and email contact.

Good

  • Free software with source code available.
  • Supports folder and file renaming.
  • Can use regular expressions and metadata.
  • Provides a portable ZIP package.
  • Supports Unicode names on NT systems.

Watch out

  • Available for Windows only.
  • The program changes names, not file contents.
  • Unicode support is limited to NT systems.
  • The maker describes it as based on old tools.

Who it suits

Ant Renamer suits Windows users who need to rename many files or folders using repeatable rules. It is also relevant if you need name patterns drawn from metadata, regular expressions, or a list.

Verdict

Ant Renamer covers bulk renaming with a wide range of rule types, at no cost. Its Windows-only scope and reliance on older tools are worth considering before choosing it.

Plans and prices

From Ant Renamer's own pricing page, checked 3 Oct 2026.

All about pricing
PlanPriceWhat it gives you
Ant RenamerFreeFree software · source code available · Windows program

The facts

Each one read from Ant Renamer's own pages, with the date it was checked.

What it does

Display support
The support page explains how to change Windows compatibility settings if text looks blurred on high DPI displays.checked 3 Oct 2026
Download
Version 2.13.0 is offered as an installer and as a portable ZIP package; the page lists a program date of 2024-12-14 and package update date of 2025-09-20.checked 3 Oct 2026
Known limitation
The maker states that Unicode is supported only on NT systems and that translated interface text depends on matching Windows regional and program language character sets.checked 3 Oct 2026
Languages
The program is available in English and numerous other languages, including French, German, Japanese, Portuguese, and Tamil.checked 3 Oct 2026
License
The program is free software under the GNU General Public License version 2 or, at the user's option, any later version.checked 3 Oct 2026
Metadata and patterns
It can create names using MP3 ID3 v1.1 tags, file modification date and time, EXIF information, regular expressions, or names from a list or file.checked 3 Oct 2026
Project status
The maker describes Ant Renamer as an old project started in 2003 that is still maintained to keep it running, but is based on old tools and does not use newer Windows features.checked 3 Oct 2026
Purpose
Ant Renamer makes it easier to rename large amounts of files and folders using specified settings.checked 3 Oct 2026
Rename actions
Features include changing extensions, replacing or inserting text, moving or deleting characters, enumeration, and case changes.checked 3 Oct 2026
Scope
The program modifies only file and folder names.checked 3 Oct 2026
Support
The maker directs users to the included help file, online user manuals, forum, or contact by forum or email.checked 3 Oct 2026
Unicode
Unicode file names are supported, including names containing Japanese, Chinese, and Arabic characters.checked 3 Oct 2026

The company

Founded
2003checked 28 Sep 2026
Maker location
Antoine Potten says he lives in Brussels, Belgium.checked 3 Oct 2026

Where it runs

Windows compatibility
The maker says it has been tested from Windows 98 and NT4 through Windows 10 and 11, with some stated limitations on older systems.checked 3 Oct 2026

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