RAR Renamer - Enhanced Version

A PowerShell GUI tool to rename RAR archives based on their internal folder structure, with advanced features for selection, logging, and custom prefixes/suffixes.

Features

✅ Checkbox Selection

• Individual checkbox for each file in the grid
• Select All / Deselect All buttons for quick selection
• Precise control over which files to rename

✅ Logging & Rollback System

• Automatic Logging: All rename operations are logged to RarRenamer_Log.json
• Detailed Log Entries: Each entry includes:
  • Timestamp
  • Old file path and name
  • New file path and name
  • Success/failure status
  • Error messages (if applicable)
• Undo Last Operation: Rollback the most recent batch of renames with one click
• Persistent Log: The log file is saved in the same directory as the script

✅ Prefix & Suffix System

• Prefix Input: Add text before the folder name (e.g., "Portable-MyApp.rar")
• Suffix Input: Add text after the folder name (e.g., "MyApp-v2.rar")
• Automatic Naming: Format is Prefix-FolderName-Suffix.rar
• Examples:
  • No prefix/suffix: MyApp.rar
  • Prefix "Portable": Portable-MyApp.rar
  • Suffix "v2": MyApp-v2.rar
  • Both: Portable-MyApp-v2.rar

Requirements

• Windows 10/11
• PowerShell 5.1 or later
• 7-Zip installed

Usage

1. Launch the script: Run RarRenamerGUI.ps1
2. Select folder: Click "Browse" or use the default (script location)
3. Configure prefix/suffix (optional):
   • Enter prefix in the first text box
   • Enter suffix in the second text box
4. Scan archives: Click "Scan Archives"
5. Select files:
   • Use checkboxes to select/deselect individual files
   • Use "Select All" or "Deselect All" buttons
6. Rename: Click "Rename Selected"
7. Undo if needed: Click "Undo Last Operation" to rollback changes

How It Works

1. Scans each RAR file using 7-Zip
2. Analyzes the archive structure to find the first top-level folder
3. Applies optional prefix/suffix to the folder name
4. Determines if renaming is needed:
   • Folder found inside archive
   • Current name differs from proposed name
   • Target filename doesn't already exist
5. Renames the RAR file to match the pattern

Examples

Without prefix/suffix:

Archive: test_v1.2.3.rar
Contains folder: "MyApp"
Result: MyApp.rar

With suffix "Portable":

Archive: test_v1.2.3.rar
Contains folder: "MyApp"
Suffix: "Portable"
Result: MyApp-Portable.rar

With prefix "P" and suffix "x64":

Archive: test_v1.2.3.rar
Contains folder: "MyApp"
Prefix: "P"
Suffix: "x64"
Result: P-MyApp-x64.rar

Log File Format

The RarRenamer_Log.json file stores all operations:

[
  {
    "Timestamp": "2025-11-18 14:30:45",
    "OldPath": "C:\\Apps\\app123.rar",
    "NewPath": "C:\\Apps\\MyApp-Portable.rar",
    "OldName": "app123.rar",
    "NewName": "MyApp-Portable.rar",
    "Success": true
  }
]

Tips

• The log file grows over time - you can archive or delete it periodically
• Undo only works for the most recent batch of operations in the current session
• You can rescan with different prefixes/suffixes to preview different naming schemes
• Leave prefix and suffix empty for basic renaming (folder name only)

Troubleshooting

• 7-Zip not found: Install from https://www.7-zip.org/
• Undo doesn't work: Ensure you haven't closed the application since renaming
• Log file error: Check file permissions in the script directory

Version History

• v2.0 (2025-11-18): Added checkboxes, logging/rollback, and prefix/suffix system
• v1.0: Initial release with basic rename functionality

License

Free to use and modify.