File Renamer Tool for Windows & Mac: Bulk Rename with Rules

Lightweight File Renamer Tool: Rename Files Safely and Quickly

What it is

• A compact utility for renaming many files at once with minimal system impact, focused on speed, simplicity, and safety.

Key features

• Batch renaming: Rename hundreds or thousands of files in one operation.
• Preview mode: See proposed filename changes before applying them.
• Undo/rollback: Revert the last operation to restore original names.
• Safe rules: Built-in safeguards to avoid overwriting files, preserve extensions, and detect name collisions.
• Simple patterns: Prefix/suffix, number sequencing, find-and-replace.
• Advanced options (optional): Regular expressions, metadata (EXIF/ID3) insertion, date-based naming.
• Cross-platform: Lightweight builds for Windows, macOS, and Linux (minimal dependencies).
• Low resource use: Small memory and CPU footprint; good for older machines.
• Portable mode: Run without installation (optional).

Typical workflow

1. Select folder(s) or files.
2. Choose a renaming rule (e.g., prefix, sequence, regex).
3. Configure options: starting number, padding, preserve extension, date format.
4. Preview changes; resolve any conflicts flagged.
5. Apply rename; use undo if needed.

Safety recommendations

• Always use preview before applying.
• Enable automatic backup or dry-run for critical files.
• Keep “preserve extension” enabled by default.
• Use collision handling like auto-increment or skip.
• Test on a small sample set first.

When to use it

• Organizing photo collections by date or event.
• Standardizing music file names using ID3 tags.
• Preparing files for import into systems that require consistent naming.
• Quickly applying consistent naming to large scans or logs.

Limitations to watch for

• Complex regex rules can produce unexpected results—test before applying.
• Metadata-based renaming requires readable metadata; corrupted files may fail.
• Cross-filesystem moves/renames may be limited by OS permissions.

If you want, I can:

• Suggest a specific renaming rule set for a folder of photos or music.
• Provide example regex patterns for common renaming tasks.