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Bulk Renamer
What it is
Bulk Renamer is a free desktop app for batch-renaming files in a selected folder. It runs on Linux, macOS, and Windows, and displays a live preview of proposed filenames before applying changes. Rename patterns can combine find and replace, prefixes or suffixes, sequential numbering, case conversion, and extension changes. Find and replace accepts plain text or regular expressions. The app loads files from the chosen folder but does not include subfolders. Before a batch proceeds, it checks for duplicate destination names and names already present on disk; a conflict prevents the rename. Undo reverses only the latest successful batch, and the undo history remains in memory only until the app closes. Bulk Renamer is open-source under the MIT license and its free plan requires no account. The maker notes that unsigned apps may display standard Gatekeeper or SmartScreen warnings at first launch until code signing is set up.
For and against
For
- Free and open-source under the MIT license.
- Runs on Linux, macOS, and Windows.
- Previews filenames before changes are applied.
- Supports regular-expression find and replace.
- Checks for destination-name conflicts.
Against
- Does not include subfolders.
- Undo covers only the latest batch.
- Undo history disappears when the app closes.
- Unsigned apps may show launch warnings.
The verdict
Bulk Renamer provides a focused set of batch-renaming tools with previews and conflict checks. Its folder-only scope and temporary, single-batch undo are important limits to consider.
Who it suits
Bulk Renamer suits people who need to apply repeatable filename changes to files in one folder. Its multi-platform desktop availability and pattern options may be useful to people who create, validate, publish, or teach media.
Plans and prices
Free
No account · no trial · no watermark · open-source under MIT license
Read 2 Oct 2026 · infinitecreation.io
On the record
- Folder scope
- The app loads files in the selected folder but does not include subfolders.infinitecreation.io · read 2 Oct 2026
- Intended users
- The maker describes Infinite Creation’s free tools as being for people who create, validate, publish, and teach media.infinitecreation.io · read 2 Oct 2026
- Launch warning
- The maker says unsigned apps may show standard Gatekeeper or SmartScreen warnings on first launch until code-signing is set up.infinitecreation.io · read 2 Oct 2026
- License
- The app is open-source under the MIT license.infinitecreation.io · read 2 Oct 2026
- Preview
- It shows a live preview of each file’s new name before changes are applied.infinitecreation.io · read 2 Oct 2026
- Purpose
- Bulk Renamer is a native desktop app for batch-renaming files in a selected folder.infinitecreation.io · read 2 Oct 2026
- Regex
- Find and replace supports plain text or regular expressions.infinitecreation.io · read 2 Oct 2026
- Rename options
- Rename patterns can combine find and replace, prefixes or suffixes, sequential numbering, case conversion, and extension changes.infinitecreation.io · read 2 Oct 2026
- Undo limit
- Undo reverses only the most recent successful batch and is stored in memory, so it does not persist after the app closes.infinitecreation.io · read 2 Oct 2026
- Validation
- Before renaming, it checks for duplicate destination names and names that already exist on disk; a conflict prevents the batch from proceeding.infinitecreation.io · read 2 Oct 2026
