AllDup Portable is a lightweight duplicate file finder designed to help users identify and remove redundant files from their storage devices. It scans folders and drives with customizable filters, locating duplicates based on filename, size, content, or other criteria. By using byte-by-byte comparisons and fast algorithms, it ensures accurate results without unnecessary complexity.

The portable version allows users to run AllDup directly from a USB stick without installation. This makes it a practical choice for those who frequently work across multiple systems or prefer not to modify system settings. It’s particularly suitable for cleaning up large media libraries or synchronizing backups.

The interface is clean and straightforward, offering a step-by-step workflow for scanning and managing duplicate files. Results are presented with detailed information and preview options, allowing users to decide what to keep or delete. Filters and exclusions help refine searches, making the process more efficient.

AllDup Portable supports a wide range of file types and includes additional options like automatic selection of duplicates, logging, and folder synchronization. It’s a convenient solution for saving disk space and improving file organization, all while maintaining user control and data safety.

Key Features:

• Duplicate File Finder: Quickly identifies duplicate files by comparing name, size, content, date, and more.
• Multiple Comparison Methods: Compares files by content (byte-by-byte), name, extension, date created/modified, and attributes.
• Preview Function: Built-in preview for many file types including images, text, and music files before deletion.
• Search Filters: Customize search by file size, extension, date, attributes, and folders.
• Flexible Deletion Options: Delete, move, copy, or rename duplicate files automatically or manually.
• Safe Search and Removal: Options to exclude system folders and protected files to avoid accidental deletions.
• Fast Search Algorithm: Efficient scanning for both small and large file collections.
• Portable Version: No installation required — run directly from USB drive or external storage.
• Detailed Reports: Export search results and reports for review or record-keeping.
• Customizable Interface: User-friendly interface with support for themes and layout preferences.